Functions Of The Skeletal SySTEM Quiz Questions
Questions and Answers
- 1.
The skeletal system function of hematopoiesis refers to the
- A.
Storage of calcium for the body
- B.
Process of blood cell formation
- C.
Attachment of muscles for movement
- D.
Ability of the skeleton to protect the more delicate structures of the body
Correct Answer
B. Process of blood cell formationExplanation
The skeletal system function of hematopoiesis refers to the process of blood cell formation. Hematopoiesis occurs in the bone marrow, where stem cells differentiate into various types of blood cells, including red blood cells, white blood cells, and platelets. These blood cells are essential for carrying oxygen, fighting infections, and clotting. Therefore, the skeletal system plays a crucial role in the production and maintenance of the body's blood cells.Rate this question:
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- 2.
The term ______ refers to the shaft of a long bone
- A.
Epiphysis
- B.
Periosteum
- C.
Diaphysis
- D.
Endosteum
Correct Answer
C. DiaphysisExplanation
The term "diaphysis" refers to the shaft of a long bone. It is the long, cylindrical, main portion of a bone between the two ends called epiphyses. The diaphysis is composed of compact bone tissue and contains the medullary cavity, which houses bone marrow. It provides support and stability to the bone and is responsible for transmitting forces during movement.Rate this question:
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- 3.
The layer made of tough fibrous tissue containing blood vessels, lymph nodes, and nerves that covers outer surface of the bone is:
- A.
Endosteum
- B.
Periosteum
- C.
Meduallary canal
- D.
Articular cartilage
Correct Answer
B. PeriosteumExplanation
The periosteum is a layer of tough fibrous tissue that covers the outer surface of the bone. It contains blood vessels, lymph nodes, and nerves, which are important for the nourishment and sensation of the bone. The periosteum also plays a role in bone repair and growth. It serves as a protective covering for the bone and helps in the attachment of tendons and ligaments.Rate this question:
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- 4.
The ends of a long bone is called ____
- A.
Epiphyses
- B.
Periosteum
- C.
Diaphysis
- D.
Endosteum
Correct Answer
A. EpiphysesExplanation
The ends of a long bone are called epiphyses.Rate this question:
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- 5.
Which is the location in the long bone where hematopoiesis occurs?
- A.
Epiphysis
- B.
Periosteum
- C.
Diaphysis
- D.
Medullary cavity
Correct Answer
A. EpiphysisExplanation
Hematopoiesis is the process of blood cell formation. The epiphysis is the rounded end of a long bone, which contains red bone marrow. Red bone marrow is responsible for hematopoiesis, producing red blood cells, white blood cells, and platelets. Therefore, the epiphysis is the location in the long bone where hematopoiesis occurs.Rate this question:
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- 6.
The structural unit of compact bone is called the
- A.
Lamella
- B.
Canaliculus
- C.
Osteon
- D.
Trabeculae
Correct Answer
C. OsteonExplanation
The structural unit of compact bone is called an osteon. An osteon consists of concentric rings of bone tissue called lamellae, which surround a central canal called the Haversian canal. The Haversian canal contains blood vessels, nerves, and connective tissue. Canaliculi are small channels that connect the lacunae (spaces between the lamellae) and allow for the exchange of nutrients and waste products between osteocytes (bone cells). Trabeculae, on the other hand, are found in spongy bone and form a lattice-like network. Therefore, the correct answer is osteon.Rate this question:
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- 7.
The rings of calcified matrix that make up the haversian system are called
- A.
Lamellae
- B.
Canaliculi
- C.
Osteon
- D.
Trabeculae
Correct Answer
A. LamellaeExplanation
The rings of calcified matrix that make up the haversian system are called lamellae. Lamellae are concentric layers of bone tissue that surround the central canal of the haversian system. These layers are formed by osteoblasts and contain collagen fibers and mineral salts, providing strength and support to the bone. The lamellae also house the lacunae, which contain osteocytes, and are interconnected by canaliculi, allowing for the exchange of nutrients and waste between cells.Rate this question:
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- 8.
Bone-building cells are called
- A.
Osteoblasts
- B.
Osteoclasts
- C.
Osteocytes
- D.
Chondrocytes
Correct Answer
A. OsteoblastsExplanation
Osteoblasts are bone-building cells that are responsible for the synthesis and secretion of the organic components of the bone matrix. They play a crucial role in bone formation and mineralization. Osteoblasts are derived from mesenchymal stem cells and are involved in the process of bone remodeling and repair. They are responsible for the deposition of new bone tissue and the regulation of bone mass. Osteoblasts also regulate the activity of osteoclasts, which are responsible for bone resorption. Osteocytes, on the other hand, are mature bone cells that are derived from osteoblasts and are involved in the maintenance and regulation of bone tissue. Chondrocytes, on the other hand, are cells found in cartilage tissue, not bone.Rate this question:
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- 9.
Which of the following are cartilage cells?
- A.
Osteoblasts
- B.
Osteoclasts
- C.
Osteocytes
- D.
Chondrocytes
Correct Answer
D. ChondrocytesExplanation
Chondrocytes are cartilage cells. Osteoblasts are bone-forming cells, osteoclasts are bone-resorbing cells, and osteocytes are mature bone cells. However, chondrocytes are specifically responsible for producing and maintaining the cartilage matrix in the body. They are found in cartilage tissues and play a crucial role in the growth and repair of cartilage.Rate this question:
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- 10.
_________ are the bone- resorbing (eating) cells
- A.
Osteoblasts
- B.
Osteoclasts
- C.
Osteocytes
- D.
Chondrocytes
Correct Answer
B. OsteoclastsExplanation
Osteoclasts are the bone-resorbing cells in the body. They are responsible for breaking down and removing old or damaged bone tissue. This process, known as bone resorption, helps in the remodeling and repair of bones. Osteoclasts play a crucial role in maintaining bone health and balance by working in coordination with osteoblasts, which are responsible for bone formation. Osteocytes are mature bone cells, while chondrocytes are cells found in cartilage tissue.Rate this question:
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- 11.
Muscle is connected to bone by
- A.
Ligaments
- B.
Cartilage
- C.
Tendons
- D.
Epithelial tissue
Correct Answer
C. TendonsExplanation
Tendons are the correct answer because they are the fibrous connective tissues that attach muscles to bones. They are responsible for transmitting the force generated by the muscle to the bone, allowing movement and providing stability to the joints. Ligaments, on the other hand, connect bones to other bones, while cartilage is a type of connective tissue found in joints and other structures. Epithelial tissue, although important for lining and protecting body surfaces, does not play a role in connecting muscles to bones.Rate this question:
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- 12.
Which bone of the skull does not contain sinuses?
- A.
Zygomatic
- B.
Frontal
- C.
Sphenoid
- D.
Ethmoid
Correct Answer
A. ZygomaticExplanation
The zygomatic bone does not contain sinuses. Sinuses are air-filled cavities within the skull that help to lighten the weight of the skull and provide resonance to the voice. The frontal, sphenoid, and ethmoid bones all contain sinuses. The frontal bone contains the frontal sinus, the sphenoid bone contains the sphenoid sinus, and the ethmoid bone contains the ethmoid sinuses. Therefore, the zygomatic bone is the only bone listed that does not contain sinuses.Rate this question:
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- 13.
How many bones are in the adult verterbral column?
- A.
12
- B.
19
- C.
24
- D.
26
Correct Answer
D. 26Explanation
The adult vertebral column consists of 26 bones. These bones are called vertebrae and they are stacked on top of each other to form the spinal column. Each vertebra is separated by intervertebral discs, which provide cushioning and allow for movement. The vertebral column plays a crucial role in supporting the body, protecting the spinal cord, and allowing for flexibility and movement.Rate this question:
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- 14.
An abnormal side to side curve in the vertebral column is called
- A.
Lordosis
- B.
Kyphosis
- C.
Scoliosis
- D.
Convexities
Correct Answer
C. ScoliosisExplanation
Scoliosis is the correct answer because it refers to an abnormal side to side curve in the vertebral column. Lordosis refers to an excessive inward curvature of the spine, kyphosis refers to an excessive outward curvature of the spine, and convexities is not a term used to describe an abnormal curve in the vertebral column. Therefore, scoliosis is the most appropriate term for this condition.Rate this question:
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- 15.
The sutures are an examples of which type of joint?
- A.
Diarthroses
- B.
Synarthroses
- C.
Amphiarthroses
- D.
None of the above
Correct Answer
B. SynarthrosesExplanation
The sutures are fibrous joints found in the skull where the bones are tightly connected by fibrous connective tissue. These joints allow for very little or no movement, making them an example of synarthroses, which are immovable joints.Rate this question:
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- 16.
Which type of doing uses cartilage to connect bones?
- A.
Diarthroses
- B.
Synarthroses
- C.
Amphairthroses
- D.
None of the above
Correct Answer
C. AmphairthrosesExplanation
Amphiarthroses is the correct answer because this type of joint allows limited movement and uses cartilage to connect the bones. Diarthroses refers to freely movable joints, synarthroses refers to immovable joints, and none of the above is not the correct answer as amphiarthroses fits the description given.Rate this question:
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- 17.
Diarthrotic joints
- A.
Make up the vast majority of joints in the body
- B.
Allow the least amount of movement
- C.
Are surrounded by a joint capsule
- D.
Both A and C
Correct Answer
D. Both A and CExplanation
Diarthrotic joints are joints that allow the most movement in the body and are surrounded by a joint capsule. This means that both options A and C are correct. Diarthrotic joints are the most common type of joints in the body and include the shoulder, hip, and knee joints. They are characterized by their ability to move freely and their joint capsules provide stability and protection to the joint.Rate this question:
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- 18.
Which joint permits the widest range of movement ?
- A.
Hinge
- B.
Pivot
- C.
Saddle
- D.
Ball and socket
Correct Answer
D. Ball and socketExplanation
The ball and socket joint permits the widest range of movement. This is because it allows for movement in multiple directions, including rotation, flexion, extension, abduction, and adduction. The spherical head of one bone fits into the cup-like socket of another bone, allowing for a wide range of motion in different planes. This type of joint is found in the shoulder and hip, and it provides great mobility and stability.Rate this question:
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- 19.
Which bone condition occurs most frequently in postmenopausal women with claim deficiencies ?
- A.
Rickets
- B.
Osteomalacia
- C.
Osteoporosis
- D.
Paget disease
Correct Answer
C. OsteoporosisExplanation
Osteoporosis is the correct answer because it is a bone condition that occurs most frequently in postmenopausal women with calcium deficiencies. It is characterized by a decrease in bone density and strength, making the bones more prone to fractures. Rickets is a condition that occurs in children due to a lack of vitamin D, causing weak and soft bones. Osteomalacia is a condition that occurs in adults due to a vitamin D deficiency, leading to softening of the bones. Paget's disease is a chronic bone disorder that affects older individuals, causing abnormal bone remodeling.Rate this question:
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- 20.
Ensuring that young children have a sufficient amount of vitamin D in their diet will prevent
- A.
Rickets
- B.
Osteomalacia
- C.
Osteoporosis
- D.
Paget disease
Correct Answer
A. RicketsExplanation
Rickets is a condition that occurs due to a deficiency of vitamin D, calcium, or phosphate. It primarily affects young children and causes weak and soft bones, leading to deformities and growth problems. Ensuring that young children have a sufficient amount of vitamin D in their diet is important to prevent rickets. Osteomalacia is a similar condition that affects adults, causing weak and soft bones. Osteoporosis is a condition characterized by low bone density and increased risk of fractures, commonly seen in older adults. Paget's disease is a chronic bone disorder that causes abnormal bone growth. None of these conditions are directly prevented by ensuring a sufficient amount of vitamin D in young children's diets.Rate this question:
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- 21.
People with what condition go through episodes of "frenzied" bone resorption and bone growth?
- A.
Rickets
- B.
Osteomalacia
- C.
Osteoporosis
- D.
Paget disease
Correct Answer
D. Paget diseaseExplanation
Paget's disease is a condition characterized by excessive bone resorption and abnormal bone growth. It causes the affected bones to become weak, enlarged, and deformed. This condition is typically seen in older individuals and can affect any bone in the body. Rickets, osteomalacia, and osteoporosis are conditions that also involve bone abnormalities, but they do not specifically cause episodes of frenzied bone resorption and growth as seen in Paget's disease.Rate this question:
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- 22.
Another name for a compound fracture is a(n) ________ fracture
- A.
Open
- B.
Closed
- C.
Comminuted
- D.
Impacted
Correct Answer
A. OpenExplanation
Another name for a compound fracture is an open fracture. This term is used to describe a fracture where the bone breaks through the skin, creating an open wound. Unlike a closed fracture, where the bone remains within the skin, an open fracture poses a higher risk of infection and requires immediate medical attention.Rate this question:
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- 23.
Bouchard nodes are common sign of which of the following conditions?
- A.
Sprain
- B.
Strain
- C.
Osteoarthritis
- D.
Dislocation
Correct Answer
C. OsteoarthritisExplanation
Bouchard nodes are bony enlargements that develop on the middle joints of the fingers in individuals with osteoarthritis. Osteoarthritis is a degenerative joint disease that causes the breakdown of cartilage in the joints, leading to pain, stiffness, and the formation of these nodes. Sprains, strains, and dislocations are traumatic injuries that do not typically result in the development of Bouchard nodes.Rate this question:
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- 24.
Subluxation is another term for
- A.
Sprain
- B.
Strain
- C.
Avulsion fracture
- D.
Dislocation
Correct Answer
D. DislocationExplanation
Subluxation refers to a partial or incomplete dislocation of a joint, where the joint surfaces are not completely separated but are partially misaligned. This term is commonly used in the medical field to describe a joint that has moved out of its normal position but is not fully dislocated. Therefore, the correct answer is dislocation.Rate this question:
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- 25.
Which of the following is not a form of inflammatory arthritis
- A.
Rheumatoid arthritis
- B.
Osteoarthritis
- C.
Gouty arthritis
- D.
Infectious arthritis
Correct Answer
B. OsteoarthritisExplanation
Osteoarthritis is not a form of inflammatory arthritis. Unlike the other options listed, which are all types of arthritis that involve inflammation of the joints, osteoarthritis is a degenerative joint disease that occurs when the cartilage in the joints wears down over time. It is characterized by joint pain, stiffness, and limited range of motion, but it does not involve the same inflammatory processes as inflammatory arthritis.Rate this question:
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- 26.
The storage function of the skeletal system refers to the storage of the
- A.
Red marrow for the process of blood cell formation
- B.
Mineral sodium of the body
- C.
Mineral calcium for body
- D.
Both b and c
Correct Answer
C. Mineral calcium for bodyExplanation
The storage function of the skeletal system refers to the storage of mineral calcium for the body. Calcium is an essential mineral that is stored in the bones and is important for maintaining bone density and strength. It is also involved in various other functions in the body, including muscle contraction, nerve function, and blood clotting. Therefore, the skeletal system plays a crucial role in storing and releasing calcium as needed to maintain overall health and function.Rate this question:
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- 27.
The frontal bone of the skull is an example of a(n) _____ bone
- A.
Long
- B.
Short
- C.
Flat
- D.
irregular
Correct Answer
C. FlatExplanation
The frontal bone of the skull is classified as a flat bone. Flat bones are thin and flat in shape, providing protection to underlying organs and supporting muscle attachment. The frontal bone forms the forehead and the upper part of the eye sockets, helping to protect the brain and the eyes. It is a good example of a flat bone because of its flat and broad surface, which allows for the attachment of muscles and provides a protective barrier.Rate this question:
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- 28.
What is the name of the spongy bone found inside flat bone?
- A.
Trabecula
- B.
Diploe
- C.
Cancellous
- D.
Osteon
Correct Answer
C. CancellousExplanation
The correct answer is cancellous. Cancellous bone, also known as trabecular or spongy bone, is found inside flat bones. It has a lattice-like structure with small, interconnected spaces filled with bone marrow. This type of bone provides support and strength to the bone while also allowing for flexibility and the production of blood cells.Rate this question:
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- 29.
The parietal bones form which suture with the frontal bone?
- A.
Fontanel
- B.
Lambdoidal
- C.
Squamous
- D.
Coronal
Correct Answer
D. CoronalExplanation
The parietal bones form the coronal suture with the frontal bone. The coronal suture is a dense, fibrous joint that connects the parietal bones to the frontal bone at the top of the skull. This suture allows for the growth and expansion of the skull during development.Rate this question:
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- 30.
The _____ region of the verterbral column contains the largest number of bones
- A.
Cervical
- B.
Thoracic
- C.
Lumbar
- D.
Sacrum
Correct Answer
B. ThoracicExplanation
The thoracic region of the vertebral column contains the largest number of bones. This region is located in the middle of the spine and consists of 12 vertebrae. The thoracic vertebrae are larger and stronger compared to the cervical and lumbar vertebrae. They are connected to the ribs, forming the rib cage, which protects the vital organs in the chest. The thoracic region is responsible for supporting the upper body and providing stability to the spine.Rate this question:
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- 31.
The hole in the center of the veterbrae the called the
- A.
Vertebral foramen
- B.
Foramen magnum
- C.
Spinous process
- D.
Transverse process
Correct Answer
A. Vertebral foramenExplanation
The correct answer is vertebral foramen.Rate this question:
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- 32.
________ is not the part of the bones of arm?
- A.
Humerus
- B.
Scapula
- C.
Ulna
- D.
Radius
Correct Answer
B. ScapulaExplanation
The scapula is not part of the bones of the arm. It is actually a flat bone that forms the shoulder blade and is located on the back of the shoulder. The humerus, ulna, and radius are the three main bones that make up the arm. The humerus is the long bone in the upper arm, while the ulna and radius are the two bones in the forearm.Rate this question:
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- 33.
Which of the following is not one of the bones that makes up the hip bone?
- A.
Illium
- B.
Acetabulum
- C.
Ischium
- D.
Pubis
Correct Answer
B. AcetabulumExplanation
The acetabulum is not one of the bones that makes up the hip bone. The hip bone, also known as the coxal bone or os coxae, is made up of three bones: the ilium, ischium, and pubis. These three bones fuse together during development to form the hip bone. The acetabulum, on the other hand, is a cup-shaped socket on the lateral side of the hip bone that articulates with the head of the femur to form the hip joint.Rate this question:
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- 34.
Functions of the skeletal system include all EXCEPT :
- A.
Provide body framework
- B.
Support and protect internal organs
- C.
Generate body heat
- D.
Store minerals
Correct Answer
C. Generate body heatExplanation
The skeletal system is responsible for providing a body framework, supporting and protecting internal organs, and storing minerals. However, it does not generate body heat. Body heat is primarily produced by the muscular system through muscle contractions. The skeletal system plays a role in regulating body temperature by providing protection and support to the muscles, which are responsible for generating heat.Rate this question:
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- 35.
Appendicular skeletal system comprises all of the following EXCEPT :
- A.
Arms and leg bones
- B.
Wrist and ankle bones
- C.
Cranial and facial bones
- D.
Shoulder and hip bones
Correct Answer
C. Cranial and facial bonesExplanation
The appendicular skeletal system consists of the bones that make up the limbs, including the arms and leg bones. It also includes the bones of the wrists and ankles, as well as the shoulder and hip bones. However, the cranial and facial bones are not part of the appendicular skeletal system. They belong to the axial skeletal system, which includes the bones of the head, neck, and trunk.Rate this question:
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- 36.
The other name of collar bones are
- A.
Scapulae
- B.
Clavicles
- C.
Humerus
- D.
Femur
Correct Answer
B. ClaviclesExplanation
The correct answer is clavicles. The clavicles, also known as collar bones, are long, curved bones that connect the shoulder blades (scapulae) to the sternum. They help to support the shoulder girdle, allowing for a wide range of motion in the arms. The humerus is the bone in the upper arm, while the femur is the bone in the thigh.Rate this question:
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- 37.
The bone in the lower arm toward the thumb on which hand rotates is:
- A.
Ulna
- B.
Radius
- C.
Femur
- D.
Humerus
Correct Answer
B. RadiusExplanation
The bone in the lower arm towards the thumb that allows for rotation of the hand is called the radius. The radius is one of the two bones in the forearm, along with the ulna. It is located on the thumb side of the forearm and is responsible for the rotation of the hand and forearm. The ulna, on the other hand, is located on the pinky side of the forearm and is not involved in the rotation of the hand. The femur and humerus are bones found in the thigh and upper arm respectively, and are not relevant to the rotation of the hand.Rate this question:
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- 38.
When bone is partially bent like sap filled wooden stick but not separated, it is called:
- A.
Open fracuture
- B.
Closed fracture
- C.
Greenstick fracture
- D.
Comminuted fracture
Correct Answer
C. Greenstick fractureExplanation
A greenstick fracture occurs when a bone is partially bent but not completely separated. It is commonly seen in children due to their more flexible bones. The term "greenstick" refers to the analogy of a young, green tree branch that can bend without breaking. In this type of fracture, the bone may crack on one side while the other side remains intact. Unlike an open or closed fracture where the bone is completely separated, a greenstick fracture is a partial break.Rate this question:
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- 39.
Signals generated by the nervous system are called
- A.
Stimuli
- B.
Nerve impulses
- C.
Sense organs
- D.
Nerve
Correct Answer
B. Nerve impulsesExplanation
Signals generated by the nervous system are called nerve impulses. Nerve impulses are electrical signals that travel along the neurons, allowing communication between different parts of the body. These impulses are responsible for transmitting information and coordinating various bodily functions.Rate this question:
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- 40.
Which of the following substances is not carried by the cardiovascular system?
- A.
Lymph
- B.
Hormones
- C.
Carbon dioxide
- D.
Nutrients
Correct Answer
A. LymphExplanation
Lymph is not carried by the cardiovascular system. While the cardiovascular system is responsible for transporting blood throughout the body, lymph is carried by the lymphatic system. The lymphatic system is a separate network of vessels and organs that helps to circulate lymph, a clear fluid that contains white blood cells and waste products. Therefore, lymph is not carried by the cardiovascular system.Rate this question:
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- 41.
Which of these organs is a primary organ of the digestive system?
- A.
Liver
- B.
Pancreas
- C.
Esophagus
- D.
Both a and c
Correct Answer
C. EsophagusExplanation
The esophagus is a primary organ of the digestive system because it plays a crucial role in the process of digestion. It is a muscular tube that connects the throat to the stomach, allowing food to pass from the mouth to the stomach. The esophagus uses rhythmic muscle contractions called peristalsis to push food down into the stomach, where further digestion occurs. The liver and pancreas are also important organs in the digestive system, but they have secondary roles in the process.Rate this question:
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- 42.
Which structure is not part of the lymphatic system?
- A.
Tonsils
- B.
Spleen
- C.
Thymus gland
- D.
Pancreas
Correct Answer
D. PancreasExplanation
The pancreas is not part of the lymphatic system. The lymphatic system is a network of vessels, organs, and lymph nodes that help to maintain fluid balance in the body and play a role in the immune system. The tonsils, spleen, and thymus gland are all organs that are part of the lymphatic system and help to filter and produce lymphocytes, which are important for immune function. The pancreas, on the other hand, is an organ that is part of the digestive system and is responsible for producing enzymes and hormones, such as insulin, that help to regulate blood sugar levels.Rate this question:
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- 43.
Which of the following is not a primary function of the muscular system?
- A.
Protection of internal organs not protected by bone
- B.
Movement
- C.
Maintaining posture
- D.
Producing heat
Correct Answer
A. Protection of internal organs not protected by boneExplanation
The muscular system has several primary functions, including movement, maintaining posture, and producing heat. However, the protection of internal organs not protected by bone is not a primary function of the muscular system. This is because the muscular system primarily focuses on providing movement and support to the body, rather than directly protecting internal organs. The protection of internal organs is mainly provided by other systems such as the skeletal system and the integumentary system.Rate this question:
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- 44.
Another name for a voluntary muscle is _______ muscle
- A.
Straited
- B.
Cardiac
- C.
Skeletal
- D.
Both a and c
Correct Answer
D. Both a and cExplanation
A voluntary muscle is a muscle that can be consciously controlled by the individual. The term "striated" refers to the appearance of muscle fibers under a microscope, which have a striped or striated pattern. Skeletal muscles, which are responsible for movement of the body, are both voluntary and striated. Therefore, both "striated" and "skeletal" can be used interchangeably to describe a voluntary muscle.Rate this question:
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- 45.
Which type of muscle tissue contains striations ?
- A.
Voluntary muscle
- B.
Cardiac muscle
- C.
Smooth muscle
- D.
Both a and b
Correct Answer
D. Both a and bExplanation
Both voluntary muscle and cardiac muscle contain striations. Voluntary muscle, also known as skeletal muscle, is under conscious control and is responsible for movement. It appears striated due to the arrangement of actin and myosin filaments. Cardiac muscle, found in the heart, is also striated but is involuntary. It contracts rhythmically to pump blood throughout the body. Smooth muscle, on the other hand, does not contain striations and is found in the walls of hollow organs such as the intestines and blood vessels.Rate this question:
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- 46.
Muscles that are not striped and not under conscious control are
- A.
Skeletal muscles
- B.
Smooth muscles
- C.
Cardiac muscles
- D.
Sphincter muscles
Correct Answer
B. Smooth musclesExplanation
Smooth muscles are muscles that are not striped and not under conscious control. They are found in the walls of hollow organs such as the stomach, intestines, and blood vessels. Unlike skeletal muscles, which are voluntary and can be consciously controlled, smooth muscles are involuntary and work automatically to regulate various bodily functions. Cardiac muscles, on the other hand, are found only in the heart and are responsible for its contraction. Sphincter muscles are a type of smooth muscle that control the opening and closing of various body passages. Therefore, the correct answer is smooth muscles.Rate this question:
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- 47.
Skeletal muscles are also referred to as
- A.
Striated
- B.
Striped
- C.
Voluntary
- D.
All these
Correct Answer
D. All theseExplanation
Skeletal muscles are referred to as "striated" because they have a striped appearance under a microscope due to the arrangement of their muscle fibers. They are also called "striped" because of this characteristic. Additionally, skeletal muscles are considered "voluntary" muscles because they are under conscious control. Therefore, the correct answer is "all these" because all of these terms accurately describe skeletal muscles.Rate this question:
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- 48.
All of the following are characteristics of the muscles EXCEPT:
- A.
Contractiblity
- B.
Excitablitiy
- C.
Elasticity
- D.
Plasticity
Correct Answer
D. PlasticityExplanation
Plasticity is not a characteristic of muscles. Contractibility refers to the ability of muscles to shorten and generate force, excitability refers to the ability of muscles to respond to stimuli, and elasticity refers to the ability of muscles to return to their original shape after being stretched. However, plasticity refers to the ability of the brain to change and adapt in response to experiences or learning.Rate this question:
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- 49.
Another name for visceral muscle is ______ muscle
- A.
Cardiac
- B.
Voluntary
- C.
Smooth
- D.
Straited
Correct Answer
C. SmoothExplanation
Smooth muscle is another name for visceral muscle because it is found in the walls of internal organs and blood vessels. Unlike cardiac muscle (which is found in the heart) and skeletal muscle (which is voluntary and attached to bones), smooth muscle is involuntary and lacks striations or visible banding. It is responsible for the contraction and relaxation of organs such as the stomach, intestines, and blood vessels, allowing for the movement of substances and regulation of blood flow.Rate this question:
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- 50.
Strong fibrous band that attach skeletal muscles to bones are:
- A.
Tendons
- B.
Ligaments
- C.
Aponeuroses
- D.
Fasciae
Correct Answer
A. TendonsExplanation
Tendons are strong fibrous bands that attach skeletal muscles to bones. They are responsible for transmitting the force generated by the muscles to the bones, allowing movement and providing stability to the joints. Ligaments, on the other hand, connect bones to other bones, providing stability and preventing excessive movement. Aponeuroses are flat, sheet-like tendons that attach muscles to bones or other muscles, while fasciae are connective tissues that surround and support muscles, organs, and other structures. Therefore, the correct answer is tendons, as they specifically attach skeletal muscles to bones.Rate this question:
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Current Version
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Oct 16, 2023Quiz Edited by
ProProfs Editorial Team -
Oct 25, 2017Quiz Created by
Natalieis
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