MBLEx Anatomy And Physiology Exam Practice Quiz!

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1. The Greek root derm- means... 

Explanation

The Greek root "derm-" refers to the skin. This can be seen in words like dermatology (the study of skin) and epidermis (the outermost layer of the skin).

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About This Quiz
MBLEx Anatomy And Physiology Exam Practice Quiz! - Quiz

The MBLEx Anatomy and Physiology Exam Practice Quiz assesses knowledge of the skeletal system, including its composition and functions. This quiz is essential for those preparing for the... see moreMBLEx certification, focusing on key anatomical concepts. see less

2. If you were to assume the anatomical position, you would do which of the following?

Explanation

The correct answer is to stand erect and face forward, with your palms facing forward with the thumbs to the side, and your feet about hip distance apart with toes pointing forward. This position is known as the anatomical position, which is a standardized reference point used in anatomy and medicine. It allows for consistent and accurate descriptions and measurements of the body's structures and movements.

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3. Which are pouch-like structures in the skin from which hair grows?

Explanation

Pouch-like structures in the skin from which hair grows are called follicles. These follicles are located in the dermis layer of the skin and contain the hair root. The hair follicles play a crucial role in hair growth and development, as they supply nutrients and oxygen to the hair shaft. Therefore, follicles are responsible for the growth and maintenance of hair on the body.

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4. When oriented away from the midline of the body, we refer to it as...

Explanation

When oriented away from the midline of the body, we refer to it as "lateral". This term is used to describe a position or structure that is located farther away from the midline of the body, towards the sides. It is the opposite of "medial", which refers to a position closer to the midline.

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5. What is a synonym for the word chewing?

Explanation

Mastication is a synonym for the word chewing. Mastication refers to the process of breaking down food in the mouth by using the teeth and jaw muscles. It involves the grinding and crushing of food into smaller pieces to facilitate digestion.

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6. The two regions of the skeleton are the axial and the appendicular skeleton. 

Explanation

The statement is true because the skeleton is divided into two main regions: the axial skeleton and the appendicular skeleton. The axial skeleton includes the skull, vertebral column, and rib cage, which provide support and protection for the organs in the central axis of the body. The appendicular skeleton includes the bones of the limbs, shoulder girdle, and pelvic girdle, which are involved in movement and locomotion. Therefore, the statement accurately describes the two regions of the skeleton.

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7. ________ describes the armpit region. Blank is... 

Explanation

Axillary describes the armpit region. It is the correct answer because "axillary" specifically refers to the area under the arm where the arm connects to the shoulder. The other options, "antebrachial," "brachial," and "antecubital," do not accurately describe the armpit region.

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8. Muscle cell located in the heart wall

Explanation

Cardiac muscle is the correct answer because it is the type of muscle cell located in the heart wall. Unlike smooth muscle found in organs like the intestines, or skeletal muscle found in the limbs, cardiac muscle is unique to the heart. It is responsible for the contraction and relaxation of the heart, allowing it to pump blood throughout the body. Cardiac muscle is striated, meaning it has a striped appearance, similar to skeletal muscle, but it is involuntary, meaning it is not under conscious control.

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9. Hip and shoulder joints are examples of synovial joints that offer the greates range of motion and are commonly know as...

Explanation

Hip and shoulder joints are examples of synovial joints that offer the greatest range of motion. These joints allow movement in multiple directions, including flexion, extension, abduction, adduction, and rotation. The term "ball and socket joints" accurately describes the structure and function of these joints, as the rounded head of one bone fits into the cup-shaped socket of another bone, allowing for a wide range of movement.

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10. What are the main organs of respiration?

Explanation

The main organs of respiration are the lungs. The lungs are responsible for the exchange of oxygen and carbon dioxide in the body. They receive oxygen from the air we breathe in through the nostrils and bronchi. The intercostals are muscles between the ribs that help in the process of breathing by expanding and contracting the chest cavity. However, they are not the main organs of respiration.

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11. The skeletal system is composed of bones, cartilage, ligaments and joints.

Explanation

The skeletal system is indeed composed of bones, cartilage, ligaments, and joints. These components work together to provide support, protection, and movement for the body. Bones are the main structural component, while cartilage helps to cushion and support joints. Ligaments connect bones to other bones, providing stability, and joints allow for movement between bones. Overall, these components make up the skeletal system, making the statement true.

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12. What is a meeting place for bones at which joint movement occurs?

Explanation

Articulation refers to the meeting place for bones where joint movement occurs. It is the point where two or more bones come together, allowing for various types of movement such as flexion, extension, rotation, and abduction. The term "articulation" is commonly used in anatomy to describe the joints in the human body, which are essential for mobility and range of motion.

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13. Flexion of the foot dorsally so that the toes are moving toward the shin is called...

Explanation

Dorsiflexion refers to the flexion of the foot in a dorsal direction, which means moving the toes towards the shin. This movement is opposite to plantarflexion, which involves pointing the toes away from the shin. Inversion and eversion, on the other hand, refer to the movements of the foot in the frontal plane, with inversion being the inward movement of the foot and eversion being the outward movement. Therefore, the correct answer is dorsiflexion.

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14. What is the acronym used to denote the number of ventricular contractions per minute?

Explanation

BPM stands for beats per minute, which is a common acronym used to denote the number of ventricular contractions per minute. This term is commonly used in medical and cardiovascular contexts to measure heart rate or pulse rate.

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15. Which of the following is the process by which products of digestion move into the bloodstream or lymph vessels, then into the body's cells?

Explanation

Absorption is the process by which products of digestion move into the bloodstream or lymph vessels, then into the body's cells. After food is broken down into smaller molecules during digestion, these molecules are absorbed through the walls of the small intestine and transported into the bloodstream or lymph vessels. From there, they are carried to the body's cells, where they are used for energy, growth, and repair. This process allows nutrients such as carbohydrates, proteins, fats, vitamins, and minerals to be utilized by the body for various functions.

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16. Muscle cell that forms the walls of hollow organs and tubes, such as the stomach, bladder, uterus, and blood vessels.

Explanation

Smooth muscle is the correct answer because it is the type of muscle cell that forms the walls of hollow organs and tubes, such as the stomach, bladder, uterus, and blood vessels. Smooth muscles are involuntary muscles that are not under conscious control. They are responsible for various functions like peristalsis, which helps in the movement of food through the digestive system, and regulating the constriction and dilation of blood vessels.

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17. Which of the following cells gives color to the skin and serves to decrease the amount of ultraviolet light that can penetrate into deeper layers of the skin?

Explanation

Melanocytes are the cells that give color to the skin and serve to decrease the amount of ultraviolet light that can penetrate into deeper layers of the skin. They produce a pigment called melanin, which is responsible for the color of our skin, hair, and eyes. Melanin acts as a natural sunscreen, protecting the skin from the harmful effects of UV radiation. This helps to prevent sunburn and reduce the risk of skin cancer.

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18. Elevation of the medial edge of the foot so that the sole is turned inward (or medially) is called...

Explanation

Inversion refers to the elevation of the medial edge of the foot, causing the sole to turn inward or medially. This movement occurs when the foot is rolled inward, towards the midline of the body. It is the opposite of eversion, which involves the outward rolling of the foot. Circumduction refers to a circular movement involving a combination of flexion, extension, abduction, and adduction. Rotation refers to a movement around a central axis.

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19. Which of the following is the term used to describe the opposing muscle that relaxes and stretches or eccentrically contracts to allow the actions of the agonists to occur?

Explanation

The term used to describe the opposing muscle that relaxes and stretches or eccentrically contracts to allow the actions of the agonists to occur is the antagonist. The antagonist muscle works in opposition to the agonist muscle and helps to control and regulate movement by providing resistance or slowing down the movement.

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20. Which of the following are tiny sacs attached to alveolar ducts?

Explanation

Alveoli are tiny sacs attached to alveolar ducts. They are the smallest functional units of the respiratory system, where gas exchange occurs between the lungs and the bloodstream. Alveoli have thin walls and a large surface area, which allows for efficient diffusion of oxygen and carbon dioxide.

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21. Which of the following is the main muscle of respiration?

Explanation

The main muscle of respiration is the respiratory diaphragm. It is a dome-shaped muscle located at the base of the lungs. When we inhale, the diaphragm contracts and moves downward, creating more space in the chest cavity for the lungs to expand. This allows air to be drawn into the lungs. When we exhale, the diaphragm relaxes and moves upward, pushing air out of the lungs. The intercostals, scalenes, and abdominals are also involved in respiration, but the respiratory diaphragm is the primary muscle responsible for the process.

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22. The plane that divides the body into superior and inferior halves is the... 

Explanation

The plane that divides the body into superior and inferior halves is the transverse (horizontal) plane. This plane is perpendicular to the long axis of the body and separates the body into upper and lower portions. It is also known as the horizontal plane because it is parallel to the ground when a person is standing upright. The other planes mentioned, such as the midsagittal (median) plane, frontal (coronal) plane, and sagittal plane, divide the body in different ways but not specifically into superior and inferior halves.

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23. Where are blood cells formed primarily?

Explanation

Blood cells are primarily formed in the red bone marrow of long, flat, and irregular bones. This is where hematopoiesis, the process of blood cell formation, takes place. The red bone marrow contains hematopoietic stem cells that can differentiate into different types of blood cells, including red blood cells, white blood cells, and platelets. These cells are then released into the bloodstream to perform their respective functions in the body. The liver and spleen also play a role in blood cell production, but their contribution is secondary compared to the red bone marrow.

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24. What is the process of eliminating indigestible or unabsorbed material from the body?

Explanation

Defecation is the process of eliminating indigestible or unabsorbed material from the body. It involves the expulsion of feces from the rectum through the anus. This process is a natural part of the digestive system and helps to remove waste products and toxins from the body.

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25. Which of the following best describes a muscular ring used to regulate movement of materials from one compartment of the gastrointestinal tract to another?

Explanation

A muscular ring used to regulate movement of materials from one compartment of the gastrointestinal tract to another is called a sphincter. Sphincters are found throughout the digestive system and act as valves, allowing the controlled passage of food, fluids, and waste materials. They help to regulate the flow and prevent backflow between different sections of the gastrointestinal tract, ensuring the efficient digestion and absorption of nutrients.

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26. Spongy bone is found in the center of long bones, typically filled with red and yellow bone marrow.

Explanation

Spongy bone is indeed found in the center of long bones. It is characterized by its porous and honeycomb-like structure, which provides strength and support while also reducing the weight of the bone. The spongy bone contains spaces filled with red and yellow bone marrow. Red marrow is responsible for producing blood cells, while yellow marrow stores fat. Therefore, the given statement is true.

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27. The plane that divides the body into anterior and posterior halves is the...

Explanation

The frontal (coronal) plane is the plane that divides the body into anterior and posterior halves. This plane runs from side to side and is perpendicular to the sagittal plane. It separates the body into front and back portions, allowing for the examination of structures from a front or back view. This plane is commonly used in medical imaging and anatomical studies to visualize the internal structures of the body.

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28. What is the fundamental unit of all living organisms?

Explanation

The fundamental unit of all living organisms is the cell. Cells are the basic building blocks of life and are responsible for carrying out all the necessary functions for an organism to survive. They are capable of reproducing, obtaining and using energy, and responding to their environment. Cells can exist as single-celled organisms, such as bacteria, or as part of a larger organism, such as in plants and animals. Overall, the cell is the smallest and most essential unit of life.

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29. Small, round bones embedded in tendons are classified as which of the following categories?

Explanation

Sesamoid bones are small, round bones that are embedded within tendons. They are classified as sesamoid bones because they resemble a sesame seed in shape and size. These bones are found in areas of the body where tendons are subjected to a lot of pressure, such as the hands, feet, and knees. Their purpose is to provide protection and improve the mechanical efficiency of the associated tendons.

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30. Which is the only artery that transports deoxygenated blood?

Explanation

The pulmonary artery is the only artery that transports deoxygenated blood. It carries blood from the heart to the lungs, where it picks up oxygen and gets rid of carbon dioxide. The oxygenated blood is then returned to the heart through the pulmonary veins. The other arteries listed in the options - coronary, mesenteric, and splenic - transport oxygenated blood to various organs and tissues in the body.

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31. What is the port of entry for air as well as the beginning of the air conduction pathway?

Explanation

The nose is the port of entry for air as well as the beginning of the air conduction pathway. Air enters the body through the nostrils of the nose and then passes through the nasal cavity, where it is filtered, warmed, and humidified. From there, the air travels down the throat and into the lungs, allowing for the process of respiration to occur.

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32. Which of the following represents a normal blood pressure reading for adults?

Explanation

A normal blood pressure reading for adults is typically around 120/80 mm Hg. The first number, 120, represents the systolic pressure, which is the pressure in the arteries when the heart beats and pumps blood. The second number, 80, represents the diastolic pressure, which is the pressure in the arteries when the heart is at rest between beats. A reading of 120/80 mm Hg indicates a healthy blood pressure level, with the systolic pressure being 120 and the diastolic pressure being 80.

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33. The oral cavity includes which of the following groups?

Explanation

The oral cavity refers to the mouth and its structures. The tongue, teeth, gums, and opening of the salivary ducts are all part of the oral cavity. The tongue helps with speech and swallowing, while the teeth and gums are involved in chewing and breaking down food. The salivary ducts are responsible for producing and releasing saliva, which aids in digestion. Therefore, these groups are all included in the oral cavity.

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34. Respiration that occurs between blood and body tissues

Explanation

Internal respiration refers to the exchange of gases (oxygen and carbon dioxide) between the blood and body tissues. This process occurs at the cellular level, where oxygen is delivered to the tissues and carbon dioxide is removed from them. It takes place in the capillaries, where oxygen diffuses from the blood into the cells, and carbon dioxide diffuses from the cells into the blood. Internal respiration is essential for providing oxygen to the cells for energy production and removing waste carbon dioxide from the body.

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35. Delivers blood to the right ventricle

Explanation

The right atrium is responsible for receiving deoxygenated blood from the body and pumping it into the right ventricle. From there, the right ventricle pumps the blood to the lungs for oxygenation. Thus, the right atrium is the correct answer as it is the chamber that delivers blood to the right ventricle.

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36. What is the long cylindrical shaft of the bone?

Explanation

The long cylindrical shaft of a bone is called the diaphysis. This is the main portion of a long bone, located between the two ends known as the epiphyses. The diaphysis is composed of compact bone tissue and contains the medullary cavity, which is filled with bone marrow. It provides support and strength to the bone, allowing for movement and protection of internal organs. The diaphysis also plays a role in the production of red and white blood cells in the bone marrow.

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37. What is the process of orally taking materials into the body such as food, liquids, and oral medications?

Explanation

Ingestion refers to the process of orally taking materials into the body such as food, liquids, and oral medications. It involves the act of consuming and swallowing these substances, allowing them to enter the digestive system for further processing. Ingestion is the initial step in the digestive process and is essential for providing the body with nutrients and energy.

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38. Respiration in which oxygen diffuses from the blood into the cells

Explanation

Internal respiration refers to the process of gas exchange that occurs within the cells of an organism. In this type of respiration, oxygen diffuses from the blood into the cells, while carbon dioxide, a waste product of cellular respiration, diffuses out of the cells into the blood. This process is essential for providing oxygen to the cells and removing carbon dioxide, allowing for the production of energy through cellular respiration. External respiration, on the other hand, refers to the exchange of gases between the external environment and the respiratory system, such as the exchange of oxygen and carbon dioxide between the lungs and the blood.

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39. The fibrous membrane covering bone that is the bone's life support system is called the intraosteum.

Explanation

The fibrous membrane covering bone that is the bone's life support system is not called the intraosteum. The correct term for this fibrous membrane is the periosteum. The periosteum contains blood vessels, nerves, and cells that are essential for the bone's growth, repair, and nutrition. The intraosteum does not exist and is not a recognized term in anatomy. Therefore, the given statement is false.

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40. Olfaction refers to which sense?

Explanation

Olfaction refers to the sense of smell. It is the ability to detect and perceive odors in the environment. Unlike taste, which is the sense of detecting flavors through the tongue, olfaction specifically pertains to the detection of scents through the nose. Vision and hearing are unrelated to olfaction and refer to the senses of sight and sound, respectively.

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41. Muscle cell that is also known as voluntary muscle or striated

Explanation

Skeletal muscle is the correct answer because it is the type of muscle cell that is also known as voluntary muscle or striated. Skeletal muscles are attached to bones and are responsible for voluntary movements of the body. They are called striated muscles because they have a striped appearance under a microscope due to the arrangement of their contractile proteins. Smooth muscle, on the other hand, is found in the walls of organs and blood vessels and is responsible for involuntary movements. Cardiac muscle is found in the heart and is also striated but is not considered voluntary.

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42. Receives blood from the right atrium

Explanation

The right ventricle receives blood from the right atrium. The atria are the upper chambers of the heart that receive blood from the body and lungs, while the ventricles are the lower chambers that pump blood out of the heart. In the case of the right ventricle, it receives deoxygenated blood from the right atrium and pumps it into the pulmonary artery to be sent to the lungs for oxygenation.

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43. Circular movemnt created when a bone moves around its own central axis is called... 

Explanation

Rotation is the correct answer because it refers to the circular movement created when a bone moves around its own central axis. This movement can be seen in joints such as the shoulder or hip, where the bone rotates in a circular motion. Protraction, circumduction, and retraction are all different types of movements but do not specifically refer to the circular movement around the central axis of a bone.

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44. What is a synonym for windpipe?

Explanation

The correct answer is Trachea. The trachea is a tube-like structure that connects the larynx to the bronchi, allowing air to pass in and out of the lungs. It is commonly referred to as the windpipe due to its function of carrying air. The other options, pharynx, larynx, and epiglottis, are all parts of the respiratory system but do not specifically refer to the windpipe.

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45. Movements that mix and propel food through the alimentary canal are called...

Explanation

Peristaltic movements refer to the contractions of the muscles in the alimentary canal that mix and propel food forward. These rhythmic contractions help to push the food along the digestive tract, allowing for proper digestion and absorption of nutrients. Dynamic, tonic, and isometric do not accurately describe the specific movements involved in the digestion process.

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46. What are the two ends of a long bone?

Explanation

The two ends of a long bone are called epiphyses. Epiphyses are the rounded, bulbous portions of the bone that articulate with other bones to form joints. They are covered with a layer of hyaline cartilage, which helps to reduce friction and absorb shock during movement. The epiphyses also contain spongy bone tissue, which is responsible for producing red blood cells. The other options listed, diaphyses, surface markings, and periosteum, are incorrect as they do not refer to the ends of a long bone.

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47. Which is a skeletal muscle's contractile unit?

Explanation

A skeletal muscle's contractile unit is called a sarcomere. It is the basic functional unit of a muscle and is responsible for muscle contraction. Sarcomeres are composed of thick and thin filaments that slide past each other during muscle contraction, resulting in the shortening of the muscle fiber. Fasciculi refers to a bundle of muscle fibers, perimysium is the connective tissue surrounding a fascicle, and retinacula are bands of connective tissue that hold tendons in place.

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48. What is the muscular tube that connects the pharynx to the stomach by piercing the diaphragm?

Explanation

The correct answer is the esophagus. The esophagus is a muscular tube that connects the pharynx (throat) to the stomach. It passes through the diaphragm, a muscle that separates the chest and abdominal cavities. The esophagus is responsible for transporting food and liquids from the mouth to the stomach for digestion.

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49. Which portion of the colon continues from the cecum up the lower right abdomen?

Explanation

The ascending colon is the portion of the colon that continues from the cecum up the lower right abdomen. It is responsible for absorbing water and electrolytes from the remaining indigestible food matter, forming feces.

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50. Delivers blood into the left ventricle

Explanation

The left atrium is responsible for receiving oxygenated blood from the lungs and delivering it into the left ventricle. The left ventricle then pumps this oxygen-rich blood to the rest of the body.

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51. Which ABO blood type is called the universal donor?

Explanation

Type O blood is considered the universal donor because it lacks both A and B antigens on the red blood cells. This means that it can be transfused to individuals with any blood type without causing an immune reaction. Individuals with type O blood are often encouraged to donate blood as it can be used in emergencies when the recipient's blood type is unknown or when there is a shortage of compatible blood types.

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52. Where are the vocal cords located?

Explanation

The vocal cords are located in the larynx. The larynx, also known as the voice box, is a part of the respiratory system located in the neck. It houses the vocal cords, which are folds of tissue that vibrate to produce sound when air passes through them. The larynx also plays a role in protecting the airway during swallowing by closing off the entrance to the trachea with the epiglottis.

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53. What is a ball-like, masticated lump of food once swallowed?

Explanation

A ball-like, masticated lump of food once swallowed is referred to as a bolus. After chewing and mixing with saliva, the food forms into a compact mass that can be easily swallowed and transported through the esophagus into the stomach. The term "bolus" is commonly used in the context of digestion and the movement of food through the digestive system.

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54. Which of the following quadrants contains the liver?

Explanation

The liver is located in the right upper quadrant of the abdomen. This is because the liver is the largest solid organ in the body and is situated on the right side, just below the diaphragm. It extends from the right upper quadrant towards the middle of the abdomen. The other quadrants mentioned in the options do not contain the liver.

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55. Medial or inward rotation of the forearm is called... 

Explanation

Pronation refers to the medial or inward rotation of the forearm. This movement occurs when the palm of the hand is turned downward or backward. It involves the rotation of the radius bone around the ulna bone, resulting in the crossing of the two bones. Pronation is commonly observed when performing activities such as turning a doorknob or pouring water from a jug.

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56. Muscle cell that consumes very little energy

Explanation

Smooth muscle is the correct answer because it consumes very little energy compared to skeletal and cardiac muscles. Smooth muscles are found in the walls of organs and blood vessels, and their contractions are slow and sustained. These muscles are responsible for involuntary movements, such as the movement of food through the digestive tract. Unlike skeletal muscles that require a lot of energy for rapid and forceful contractions, smooth muscles have a slower metabolism and can maintain a low level of energy consumption over a longer period of time.

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57. Respiration that is also referred to as tissue respiration

Explanation

Internal respiration refers to the process of gas exchange that occurs at the cellular level within the body. It involves the exchange of oxygen and carbon dioxide between the bloodstream and the cells. This process takes place in the tissues and is essential for cellular metabolism and energy production. External respiration, on the other hand, refers to the exchange of gases between the external environment and the lungs. Therefore, the correct answer is internal respiration, as it specifically relates to the exchange of gases at the cellular level.

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58. Which of the following are the superior hollow heart chambers?

Explanation

The superior hollow heart chambers are the atria. The atria receive blood returning to the heart and then pump it into the ventricles. They are located at the top of the heart and are smaller and thinner-walled compared to the ventricles. The ventricles, on the other hand, are the lower chambers of the heart and are responsible for pumping blood out of the heart to the rest of the body. Bladders and papilla are not related to the heart chambers and are not relevant to the question.

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59. Which is the first section of the small intestines?

Explanation

The correct answer is Duodenum. The duodenum is the first section of the small intestines. It is responsible for receiving partially digested food from the stomach and further breaking it down with the help of enzymes from the pancreas and bile from the liver.

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60. One of the functions of the skeletal system is to restore vital minerals. 

Explanation

The skeletal system plays a crucial role in maintaining mineral balance in the body. It stores minerals such as calcium and phosphorus, which are essential for various bodily functions. When the body needs these minerals, the skeletal system releases them into the bloodstream. This process helps maintain the mineral levels required for vital functions like muscle contraction, nerve transmission, and blood clotting. Therefore, the statement that the skeletal system restores vital minerals is true.

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61. Also referred to as visceral muscle

Explanation

Smooth muscle is the correct answer because it is also referred to as visceral muscle. Smooth muscle is found in the walls of organs and structures such as the intestines, blood vessels, and uterus. It is called smooth muscle because its cells lack striations, giving it a smooth appearance under a microscope. Smooth muscle is involuntary, meaning it is not under conscious control. It contracts and relaxes slowly and rhythmically, allowing for functions such as digestion, blood flow regulation, and childbirth.

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62. Respiration in which carbon dioxide diffuses from the cells into the bloodstream

Explanation

Internal respiration refers to the process by which carbon dioxide (CO2) diffuses from the cells into the bloodstream. This occurs in the tissues of the body, where cells produce CO2 as a waste product of cellular respiration. The CO2 then diffuses across the cell membranes and into the surrounding capillaries, where it binds to hemoglobin or dissolves in the plasma for transport back to the lungs. Therefore, internal respiration is the correct term for the described process.

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63. The bones of the skull, thorax, and vertebral column and the hyoid bone comprise the appendicular skeleton.

Explanation

The given statement is false. The bones of the skull, thorax, and vertebral column, along with the hyoid bone, actually comprise the axial skeleton, not the appendicular skeleton. The appendicular skeleton consists of the bones of the upper and lower limbs, including the shoulder and pelvic girdles.

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64. Which of the following is a J-shaped organ bound at bond ends by sphincters?

Explanation

The stomach is a J-shaped organ that is bound at both ends by sphincters. The lower esophageal sphincter separates the stomach from the esophagus, while the pyloric sphincter separates the stomach from the small intestine. These sphincters help regulate the movement of food into and out of the stomach, allowing for digestion and preventing backflow of stomach acid into the esophagus. Therefore, the stomach is the correct answer in this case.

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65. Which layer of skin contains blood vessels, many nerve receptors, hair follicles, and skin glands?

Explanation

The dermis is the correct answer because it is the layer of skin that contains blood vessels, many nerve receptors, hair follicles, and skin glands. The dermis is located beneath the epidermis and provides support and nourishment to the skin. It is responsible for regulating body temperature, sensing touch, and producing sweat and oil.

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66. Which of the following is the thick myofilament?

Explanation

Myosin is the correct answer because it is a thick myofilament found in muscle fibers. It is responsible for the contraction of muscles by interacting with actin, a thin myofilament. Myosin molecules have a long tail and a globular head that binds to actin, forming cross-bridges. These cross-bridges undergo a series of chemical reactions that generate the force required for muscle contraction. Therefore, myosin plays a crucial role in muscle function and is the thick myofilament in this context.

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67. Which are the two ends of a sarcomere?

Explanation

The two ends of a sarcomere are called Z-lines. These structures mark the boundaries of the sarcomere and are responsible for anchoring the actin filaments. During muscle contraction, the Z-lines move closer together, causing the sarcomere to shorten. Therefore, Z-lines play a crucial role in the contraction and relaxation of muscles.

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68. Which of the following is NOT a characteristic of blood?

Explanation

Blood is slightly alkaline, not acidic. The pH of blood is typically around 7.4, which is slightly alkaline. This alkaline pH is important for maintaining proper functioning of enzymes and other biochemical processes in the body.

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69. Respiration in which carbon dioxide diffuses from the blood across the alveolar walls into the air inside the alveoli which will then be exhaled

Explanation

External respiration refers to the exchange of gases between the lungs and the external environment. In this process, oxygen is taken in from the air into the alveoli of the lungs, while carbon dioxide, a waste product, is diffused from the blood across the alveolar walls into the air inside the alveoli. This carbon dioxide is then exhaled out of the body. Therefore, the given explanation aligns with the concept of external respiration.

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70. What is suspended from the inferior portion os the cecum?

Explanation

The vermiform appendix is suspended from the inferior portion of the cecum. The appendix is a small, finger-like pouch attached to the cecum, which is the first part of the large intestine. It hangs down from the cecum and is typically located in the lower right quadrant of the abdomen. The appendix does not have a known function in humans and can sometimes become inflamed or infected, leading to a condition called appendicitis.

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71. Muscle cell that contains bands of red and white material, causing it to appear striated

Explanation

A skeletal muscle is a muscle cell that contains bands of red and white material, causing it to appear striated. This type of muscle is responsible for voluntary movements in the body, such as walking and lifting weights. It is attached to bones by tendons and is under conscious control. Smooth muscle, on the other hand, does not have the same striated appearance and is found in organs like the stomach and intestines. Cardiac muscle is specific to the heart and also appears striated, but it has different characteristics compared to skeletal muscle.

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72. Which layer is known as the true skin?

Explanation

The dermis is known as the true skin because it is the layer of skin that lies beneath the epidermis and is responsible for providing strength, elasticity, and support to the skin. It contains various structures such as blood vessels, nerve endings, sweat glands, and hair follicles. The dermis also plays a crucial role in regulating body temperature and protecting the body from external threats.

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73. Which skin region is relatively avascular?

Explanation

The epidermis is the outermost layer of the skin and is relatively avascular, meaning it lacks blood vessels. It is primarily composed of keratinocytes, which are responsible for producing the protein keratin that provides strength and waterproofing to the skin. The lack of blood vessels in the epidermis is important for its main function of protecting the body from external factors such as pathogens and UV radiation. The dermis, on the other hand, is highly vascularized and contains blood vessels, nerves, and other structures. The hypodermis is also vascularized and contains adipose tissue and blood vessels. The endodermis is not a skin region but rather a layer of cells in plant roots.

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74. What is the theory that explains how filaments within the sarcomere slide past each other in order to create a change in muscle length?

Explanation

The correct answer is Sliding filament theory. This theory explains how filaments within the sarcomere slide past each other in order to create a change in muscle length. According to this theory, during muscle contraction, the thin actin filaments slide over the thick myosin filaments, causing the sarcomere to shorten. This sliding of filaments is facilitated by the interaction between the myosin heads and actin, which results in the formation of cross-bridges and the subsequent pulling of actin filaments towards the center of the sarcomere. This theory is widely accepted and supported by experimental evidence.

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75. Which of the following is the thin myofilament?

Explanation

Actin is the correct answer because it is a protein that forms the thin filaments in muscle cells. These thin filaments interact with thick filaments made of myosin to generate muscle contractions. Epimysium is a connective tissue that surrounds the entire muscle, while fasciculi are bundles of muscle fibers. Therefore, Actin is the only option that represents the thin myofilament.

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76. Which ABO blood type is called the universal recipient?

Explanation

Type AB is called the universal recipient because individuals with this blood type can receive blood from any of the other blood types (A, B, or O) without experiencing an adverse immune response. This is because type AB blood has both A and B antigens on its red blood cells, and therefore does not produce antibodies against either A or B antigens. As a result, type AB individuals can safely receive transfusions of any ABO blood type.

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77. Which of the following is in the proper order from least complex to most complex?

Explanation

The correct answer is Chemicals, cells, tissues, organs, organ systems, organism. This is the proper order from least complex to most complex in terms of biological organization. Chemicals are the basic building blocks of life, followed by cells which are made up of chemicals. Tissues are formed by groups of cells working together, organs are made up of different tissues working together, and organ systems are composed of multiple organs working together. Finally, an organism is the highest level of biological organization, consisting of all the organ systems working together to maintain life.

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78. Which of the following is referred to as the guardian of the airways?

Explanation

The epiglottis is referred to as the guardian of the airways because it is a flap of cartilage located at the base of the tongue that prevents food and liquid from entering the trachea during swallowing. It covers the opening of the larynx, ensuring that only air can pass through to the lungs while eating and drinking. This mechanism helps to protect the respiratory system from potential choking hazards.

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79. Receives blood from the superior and inferior vena canae and the coronary sinus

Explanation

The right atrium receives blood from the superior and inferior vena canae and the coronary sinus. This is because the superior vena cava brings deoxygenated blood from the upper body, the inferior vena cava brings deoxygenated blood from the lower body, and the coronary sinus brings deoxygenated blood from the heart muscle itself. The right atrium then pumps this deoxygenated blood into the right ventricle, which will eventually pump it to the lungs for oxygenation.

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80. The sarcoplasmic reticulum stores and releases which ion?

Explanation

The sarcoplasmic reticulum is a specialized organelle in muscle cells that stores and releases calcium ions. Calcium plays a crucial role in muscle contraction by binding to proteins within the muscle fibers, allowing them to slide past each other and generate force. When a muscle is stimulated to contract, calcium is released from the sarcoplasmic reticulum into the surrounding muscle fibers, initiating the contraction process. Therefore, the correct answer is calcium.

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81. Respiration that is also referred to as pulmonary respiration 

Explanation

External respiration is the process of exchanging oxygen and carbon dioxide between the lungs and the external environment. It involves the inhalation of oxygen-rich air into the lungs and the exhalation of carbon dioxide from the lungs. This process occurs in the alveoli, tiny air sacs in the lungs, where oxygen from the inhaled air diffuses into the bloodstream and carbon dioxide from the bloodstream diffuses into the alveoli to be exhaled. Internal respiration, on the other hand, refers to the exchange of gases between the bloodstream and the body's tissues.

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82. Freely movable joins are classified as...

Explanation

Diarthrotic joints are freely movable joints. These joints allow for a wide range of motion and are found in areas such as the shoulder, hip, and knee. Synarthrotic joints are immovable joints, while amphiarthrotic joints allow for limited movement. Triarthrotic is not a recognized classification for joints. Therefore, the correct classification for freely movable joints is diarthrotic.

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83. Which of the following is the left atrioventricular valve, also called the mitral valve?

Explanation

The left atrioventricular valve, also known as the mitral valve, is the bicuspid valve. This valve is located between the left atrium and the left ventricle of the heart. It consists of two flaps or cusps that open and close to regulate blood flow from the atrium to the ventricle. The tricuspid valve is located on the right side of the heart, while the pulmonary semilunar valve is located in the pulmonary artery. The "tricycle valve" is not a known valve in the human heart.

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84. Respiration that occurs in the lungs 

Explanation

External respiration refers to the process of exchanging oxygen and carbon dioxide between the lungs and the external environment. It involves the inhalation of oxygen-rich air into the lungs, where it diffuses into the bloodstream and is transported to the body's tissues. At the same time, carbon dioxide, a waste product of cellular respiration, is removed from the bloodstream and exhaled out of the lungs. Therefore, respiration that occurs in the lungs is correctly referred to as external respiration.

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85. Respiration in which gas exchange between the blood and the air in the alveoli take place

Explanation

External respiration refers to the process of gas exchange that occurs between the blood and the air in the alveoli. During external respiration, oxygen from the inhaled air diffuses into the bloodstream while carbon dioxide, a waste product, is removed from the blood and exhaled. This process takes place in the lungs, specifically in the tiny air sacs called alveoli, where the thin walls allow for efficient exchange of gases between the air and the bloodstream. Internal respiration, on the other hand, refers to the exchange of gases that occurs at the cellular level within the body's tissues.

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86. Collagen and elastin are found in which layer of skin?

Explanation

Collagen and elastin are found in the dermis layer of the skin. The dermis is the middle layer of the skin, located between the epidermis (outer layer) and the hypodermis (innermost layer). Collagen provides structural support and strength to the skin, while elastin allows the skin to stretch and recoil. These proteins are essential for maintaining the elasticity, firmness, and overall health of the skin.

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87. What percentage of blood is plasma?

Explanation

Plasma is the liquid component of blood that carries various substances such as nutrients, hormones, and waste products. It makes up about 55% of the total blood volume. This is because plasma is the largest component of blood and occupies a significant portion of the blood volume, while the remaining percentage is made up of red and white blood cells, platelets, and other cellular components.

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88. Which of the following best describes the amount of blood ejected from the left ventricle during each contraction?

Explanation

Stroke volume is the amount of blood that is ejected from the left ventricle of the heart during each contraction. It represents the volume of blood that is pumped out of the heart and into the circulation with each heartbeat. This is an important measure of cardiac function and is influenced by factors such as heart rate, preload, and afterload.

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89. Muscle cell that is multinucleated

Explanation

Skeletal muscle is the correct answer because it is the only type of muscle cell that is multinucleated. Smooth muscle cells and cardiac muscle cells are both uninucleated, meaning they only have one nucleus. Skeletal muscle cells, on the other hand, have multiple nuclei, which allows them to generate more protein and contract with greater force. This multinucleation is a unique characteristic of skeletal muscle cells and is essential for their function in voluntary movement.

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90. Muscle cell that is cigar shaped

Explanation

Skeletal muscle is the correct answer because it is the only type of muscle cell that is cigar-shaped. Smooth muscle cells are spindle-shaped, while cardiac muscle cells are branched. Skeletal muscle cells, also known as striated muscle cells, have a long and cylindrical shape, resembling a cigar.

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91. Receives blood from all parts of the body except the lungs 

Explanation

The right atrium receives blood from all parts of the body except the lungs. This is because the right atrium receives deoxygenated blood from the superior and inferior vena cava, which collect blood from the systemic circulation. The deoxygenated blood is then pumped into the right ventricle, which will eventually pump it to the lungs for oxygenation. Therefore, the correct answer is the right atrium.

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92. What is another term used to describe the subcutaneous layer?

Explanation

The correct answer is "Hypodermis". The hypodermis is another term used to describe the subcutaneous layer. It is the deepest layer of the skin and is composed of fat cells and connective tissue. The hypodermis helps to insulate the body, store energy, and cushion organs and tissues.

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93. Which is the fascial covering of the entire muscle?

Explanation

Epimysium is the correct answer because it is the fascial covering that surrounds the entire muscle. It is a dense connective tissue layer that provides protection and support to the muscle, helping to maintain its shape and integrity. Epimysium also connects the muscle to the surrounding structures, allowing for coordinated movement and transmission of forces.

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94. The hollow space within the center of the diaphysis is...

Explanation

The medullary cavity is the correct answer. It is the hollow space within the center of the diaphysis, which is the long shaft of a bone. This cavity contains bone marrow, which is responsible for producing blood cells. The medullary cavity is surrounded by compact bone and provides structural support to the bone while also allowing for the storage of minerals.

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95. Which of the following systems of canals connects to Haversian canals and runs horizontally through bone?

Explanation

Volkman's canal is the correct answer because it is a system of canals that connects to Haversian canals and runs horizontally through bone. Haversian canals are small channels in the bone that contain blood vessels and nerves, and Volkman's canals provide a means for these blood vessels and nerves to travel horizontally through the bone, connecting different Haversian canals. The other options, Golgi canal, osteal canal, and medullary canal, are not associated with connecting to Haversian canals or running horizontally through bone.

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96. Which cells produce mocus?

Explanation

Goblet cells are responsible for producing mucus. Mucus is a thick, sticky substance that helps to lubricate and protect the lining of various organs and tissues in the body. Goblet cells are found in the respiratory tract, digestive tract, and other mucous membranes throughout the body. They secrete mucus, which helps to trap and remove foreign particles, bacteria, and other potential harmful substances. This helps to maintain the health and function of the organs and tissues where goblet cells are present.

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97. What is found at the junction between the esophagus and stomach?

Explanation

The cardioesophageal sphincter is found at the junction between the esophagus and stomach. This sphincter acts as a valve, allowing food to pass from the esophagus into the stomach and preventing stomach acid from flowing back up into the esophagus. It helps to regulate the movement of food and prevents acid reflux, which can cause heartburn and other symptoms.

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98. Which valve lies between the left ventricle and the aorta?

Explanation

The aortic semilunar valve is the correct answer because it is the valve that separates the left ventricle from the aorta. This valve prevents the backflow of blood from the aorta into the left ventricle when the ventricle relaxes.

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99. Muscle cell shaped like "Y" of "H"

Explanation

Cardiac muscle cells have a unique structure that resembles the shape of a "Y" or "H". This distinct shape allows the cells to tightly connect with each other, forming a strong network that can withstand the constant contraction and relaxation required for the heart to pump blood effectively. Unlike smooth muscle cells, which have a spindle-like shape, and skeletal muscle cells, which are long and cylindrical, the cardiac muscle cells' "Y" or "H" shape is specific to the heart and enables synchronized contractions for efficient pumping.

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100. Muscle cell which its many nuclei are located near the periphery of the cell

Explanation

Skeletal muscle is the correct answer because it is the only type of muscle cell that has many nuclei located near the periphery of the cell. Smooth muscle cells have a single nucleus and cardiac muscle cells have one or two centrally located nuclei. Skeletal muscle cells, on the other hand, are long and cylindrical in shape with multiple nuclei located at the periphery, giving them a striated appearance. This arrangement allows for efficient contraction and movement of the skeletal muscles.

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101. Which receptors are often called the "cold receptors"?

Explanation

Krause end bulbs are often called the "cold receptors" because they are sensitive to cold temperatures. These receptors are located in the skin and help detect changes in temperature, particularly cold sensations. They are responsible for sending signals to the brain when the skin comes into contact with cold objects or environments, allowing us to perceive and respond to cold stimuli.

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102. The two girdles in the axial skeleton are the shoulder girdle and the pelvic girdle. 

Explanation

The statement is false because the axial skeleton only includes the skull, vertebral column, and rib cage. The shoulder girdle and pelvic girdle are actually part of the appendicular skeleton, which includes the limbs and the bones that connect them to the axial skeleton.

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103. Minute vascular canals running longitudinally down the bone are the...

Explanation

Haversian canals are minute vascular canals that run longitudinally down the bone. They contain blood vessels, nerves, and connective tissue, and they are responsible for supplying nutrients and removing waste products from the bone tissue. Haversian canals are found in compact bone and are surrounded by concentric layers of bone tissue called lamellae.

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104. Pumps blood into the aorta

Explanation

The left ventricle is responsible for pumping oxygenated blood from the heart to the rest of the body through the aorta. It is the thickest and strongest chamber of the heart, as it needs to generate enough force to push blood throughout the entire circulatory system. The left ventricle receives oxygen-rich blood from the left atrium and contracts to push the blood out into the aorta, which then distributes it to the rest of the body.

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105. Receives blood from the pulmonary veins

Explanation

The left atrium receives blood from the pulmonary veins. The pulmonary veins carry oxygenated blood from the lungs back to the heart. Once in the left atrium, the blood is then pumped into the left ventricle, which will eventually pump it out to the rest of the body. The left atrium acts as a holding chamber for oxygenated blood before it is sent to be distributed throughout the body.

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106. Respiration in which oxygen diffuses from the air inside the alveoli across the alveolar walls into the blood capillaries

Explanation

External respiration refers to the process of exchanging gases between the external environment and the lungs. In this case, oxygen from the air inside the alveoli diffuses across the alveolar walls into the blood capillaries, while carbon dioxide moves in the opposite direction. This process occurs in the lungs and is essential for the uptake of oxygen and elimination of carbon dioxide from the body. Internal respiration, on the other hand, refers to the exchange of gases between the blood and body tissues at the cellular level.

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107. Muscle cell that contains one oval-shaped nucleus

Explanation

Cardiac muscle is the correct answer because it is the only type of muscle cell that contains one oval-shaped nucleus. Smooth muscle cells have a single nucleus, but it is not oval-shaped. Skeletal muscle cells have multiple nuclei, and their shape can vary. Cardiac muscle cells have a single nucleus that is oval-shaped, making them unique among the three options.

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108. Contains the thickest heart wall

Explanation

The left ventricle is responsible for pumping oxygenated blood to the rest of the body. It has the thickest wall compared to the other chambers of the heart because it needs to generate enough force to push the blood against the high resistance of the systemic circulation. The left ventricle receives oxygen-rich blood from the left atrium and contracts forcefully to propel it into the aorta, which then distributes the blood to all the organs and tissues of the body.

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109. What is a synonym for throat?

Explanation

The synonym for throat is pharynx. The pharynx is a muscular tube that connects the nasal cavity and mouth to the esophagus and larynx. It is an important part of the respiratory and digestive systems. The trachea, epiglottis, and larynx are all structures that are located within or connected to the pharynx, but they are not direct synonyms for the term "throat."

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110. Pumps blood through the pulmonary trunk and into the pulmonary arteries

Explanation

The right ventricle is responsible for pumping blood through the pulmonary trunk and into the pulmonary arteries. This is because the right ventricle receives deoxygenated blood from the right atrium and then contracts to push the blood out of the heart and into the lungs for oxygenation. The oxygenated blood is then returned to the left atrium and ventricle for distribution to the rest of the body.

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111. Muscle cell that contain intercalated disks between each muscle cell

Explanation

Cardiac muscle is the correct answer because it is the only type of muscle that contains intercalated disks between each muscle cell. These intercalated disks allow for synchronized contractions of the cardiac muscle cells, ensuring efficient pumping of blood throughout the body. Smooth muscle does not have intercalated disks, and skeletal muscle is composed of individual muscle fibers that are not connected by intercalated disks. Therefore, cardiac muscle is the only type of muscle that fits the description provided.

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112. Muscle cell that is spindle shaped (pointed at both ends)

Explanation

Smooth muscle cells are characterized by their spindle-shaped morphology, with pointed ends. These cells are found in the walls of various organs and structures, such as blood vessels, the digestive tract, and the respiratory system. Smooth muscle is responsible for involuntary movements and contractions, controlling functions like blood flow, peristalsis, and airway diameter. Unlike skeletal and cardiac muscle, smooth muscle lacks striations and is not under conscious control. Therefore, the correct answer is smooth muscle.

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113. Muscle cell adapted for long, sustained contractions

Explanation

Smooth muscle cells are adapted for long, sustained contractions. This is because smooth muscle is found in organs such as the intestines, blood vessels, and uterus, where contractions need to be maintained for extended periods of time. Smooth muscle cells have a unique arrangement of actin and myosin filaments that allows them to contract and relax slowly and rhythmically. Additionally, smooth muscle cells have a high resistance to fatigue, enabling them to sustain contractions for prolonged periods without tiring.

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114. The shape of this muscle cell allows them to fit together and create the spherical shape of a hollow organ

Explanation

Cardiac muscle cells have a unique branching shape that allows them to fit together and create the spherical shape of a hollow organ, such as the heart. This arrangement enables the cardiac muscle to contract and pump blood effectively throughout the body. Unlike skeletal muscle cells, which are long and cylindrical, and smooth muscle cells, which are spindle-shaped, the branching structure of cardiac muscle cells allows for synchronized contraction and relaxation, ensuring efficient and coordinated pumping action.

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115. The intercartilaginous ligament is a tough membrane that interconnects select bones, attaching to their periosteum.

Explanation

The intercartilaginous ligament does not exist. It is not a recognized ligament in the human body. Therefore, the statement that it is a tough membrane that interconnects select bones and attaches to their periosteum is false.

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The Greek root derm- means... 
If you were to assume the anatomical position, you would do which of...
Which are pouch-like structures in the skin from which hair grows?
When oriented away from the midline of the body, we refer to it as...
What is a synonym for the word chewing?
The two regions of the skeleton are the axial and the appendicular...
________ describes the armpit region. Blank is... 
Muscle cell located in the heart wall
Hip and shoulder joints are examples of synovial joints that offer the...
What are the main organs of respiration?
The skeletal system is composed of bones, cartilage, ligaments and...
What is a meeting place for bones at which joint movement occurs?
Flexion of the foot dorsally so that the toes are moving toward the...
What is the acronym used to denote the number of ventricular...
Which of the following is the process by which products of digestion...
Muscle cell that forms the walls of hollow organs and tubes, such as...
Which of the following cells gives color to the skin and serves to...
Elevation of the medial edge of the foot so that the sole is turned...
Which of the following is the term used to describe the opposing...
Which of the following are tiny sacs attached to alveolar ducts?
Which of the following is the main muscle of respiration?
The plane that divides the body into superior and inferior halves is...
Where are blood cells formed primarily?
What is the process of eliminating indigestible or unabsorbed material...
Which of the following best describes a muscular ring used to regulate...
Spongy bone is found in the center of long bones, typically filled...
The plane that divides the body into anterior and posterior halves is...
What is the fundamental unit of all living organisms?
Small, round bones embedded in tendons are classified as which of the...
Which is the only artery that transports deoxygenated blood?
What is the port of entry for air as well as the beginning of the air...
Which of the following represents a normal blood pressure reading for...
The oral cavity includes which of the following groups?
Respiration that occurs between blood and body tissues
Delivers blood to the right ventricle
What is the long cylindrical shaft of the bone?
What is the process of orally taking materials into the body such as...
Respiration in which oxygen diffuses from the blood into the cells
The fibrous membrane covering bone that is the bone's life support...
Olfaction refers to which sense?
Muscle cell that is also known as voluntary muscle or striated
Receives blood from the right atrium
Circular movemnt created when a bone moves around its own central axis...
What is a synonym for windpipe?
Movements that mix and propel food through the alimentary canal are...
What are the two ends of a long bone?
Which is a skeletal muscle's contractile unit?
What is the muscular tube that connects the pharynx to the stomach by...
Which portion of the colon continues from the cecum up the lower right...
Delivers blood into the left ventricle
Which ABO blood type is called the universal donor?
Where are the vocal cords located?
What is a ball-like, masticated lump of food once swallowed?
Which of the following quadrants contains the liver?
Medial or inward rotation of the forearm is called... 
Muscle cell that consumes very little energy
Respiration that is also referred to as tissue respiration
Which of the following are the superior hollow heart chambers?
Which is the first section of the small intestines?
One of the functions of the skeletal system is to restore vital...
Also referred to as visceral muscle
Respiration in which carbon dioxide diffuses from the cells into the...
The bones of the skull, thorax, and vertebral column and the hyoid...
Which of the following is a J-shaped organ bound at bond ends by...
Which layer of skin contains blood vessels, many nerve receptors, hair...
Which of the following is the thick myofilament?
Which are the two ends of a sarcomere?
Which of the following is NOT a characteristic of blood?
Respiration in which carbon dioxide diffuses from the blood across the...
What is suspended from the inferior portion os the cecum?
Muscle cell that contains bands of red and white material, causing it...
Which layer is known as the true skin?
Which skin region is relatively avascular?
What is the theory that explains how filaments within the sarcomere...
Which of the following is the thin myofilament?
Which ABO blood type is called the universal recipient?
Which of the following is in the proper order from least complex to...
Which of the following is referred to as the guardian of the airways?
Receives blood from the superior and inferior vena canae and the...
The sarcoplasmic reticulum stores and releases which ion?
Respiration that is also referred to as pulmonary respiration 
Freely movable joins are classified as...
Which of the following is the left atrioventricular valve, also called...
Respiration that occurs in the lungs 
Respiration in which gas exchange between the blood and the air in the...
Collagen and elastin are found in which layer of skin?
What percentage of blood is plasma?
Which of the following best describes the amount of blood ejected from...
Muscle cell that is multinucleated
Muscle cell that is cigar shaped
Receives blood from all parts of the body except the lungs 
What is another term used to describe the subcutaneous layer?
Which is the fascial covering of the entire muscle?
The hollow space within the center of the diaphysis is...
Which of the following systems of canals connects to Haversian canals...
Which cells produce mocus?
What is found at the junction between the esophagus and stomach?
Which valve lies between the left ventricle and the aorta?
Muscle cell shaped like "Y" of "H"
Muscle cell which its many nuclei are located near the periphery of...
Which receptors are often called the "cold receptors"?
The two girdles in the axial skeleton are the shoulder girdle and the...
Minute vascular canals running longitudinally down the bone are the...
Pumps blood into the aorta
Receives blood from the pulmonary veins
Respiration in which oxygen diffuses from the air inside the alveoli...
Muscle cell that contains one oval-shaped nucleus
Contains the thickest heart wall
What is a synonym for throat?
Pumps blood through the pulmonary trunk and into the pulmonary...
Muscle cell that contain intercalated disks between each muscle cell
Muscle cell that is spindle shaped (pointed at both ends)
Muscle cell adapted for long, sustained contractions
The shape of this muscle cell allows them to fit together and create...
The intercartilaginous ligament is a tough membrane that interconnects...
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