Hardest ANP Exam II Quiz!

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  • 1/143 Questions

    Which of the following accessory organs produces a fluid to soften food?

    • Teeth
    • Salivary glands
    • Liver
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About This Quiz

The 'Hardest ANP Exam II Quiz!' assesses key functions of the human digestive system and its accessory organs. It covers smooth muscle actions, ingestion, absorption, and the roles of salivary glands, liver, and gallbladder, providing crucial insights for advanced anatomy students.

Human Anatomy Quizzes & Trivia

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  • 2. 

    This hormone promotes spermatogenesis.

    • Relaxin

    • Testosterone

    • Inhibin

    Correct Answer
    A. Testosterone
    Explanation
    Testosterone is the hormone responsible for promoting spermatogenesis, which is the process of sperm production. It is produced by the testes in males and plays a crucial role in the development and maturation of sperm cells. Testosterone also regulates other male reproductive functions such as sex drive and the development of secondary sexual characteristics. Therefore, it is the correct answer in this context.

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  • 3. 

    This is the connection between the placenta and the embryo.

    • Amnion

    • Chorion

    • Umbilical cord

    Correct Answer
    A. Umbilical cord
    Explanation
    The umbilical cord is the correct answer because it is the structure that connects the placenta to the embryo. It contains blood vessels that transport oxygen and nutrients from the mother to the developing fetus, and waste products from the fetus back to the mother for elimination. The umbilical cord also serves as a support system, providing stability and protection for the developing embryo.

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  • 4. 

    This is the portion of the uterus that opens into the vagina.

    • Urethra

    • Cervix

    • Uterine tubes

    Correct Answer
    A. Cervix
    Explanation
    The cervix is the correct answer because it is the portion of the uterus that opens into the vagina. It acts as a barrier between the vagina and the uterus, and it also plays a role in the menstrual cycle and pregnancy. The cervix contains a small opening called the cervical os, which allows menstrual blood to flow out of the uterus and sperm to enter during intercourse. It also dilates during childbirth to allow the baby to pass through the birth canal.

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  • 5. 

    Which of following processes is the primary function of the villi of the small intestine?

    • Secretion

    • Mixing and propulsion

    • Absorption

    Correct Answer
    A. Absorption
    Explanation
    The primary function of the villi of the small intestine is absorption. The villi are finger-like projections that increase the surface area of the small intestine, allowing for more efficient absorption of nutrients from digested food. The villi are lined with specialized cells called enterocytes, which have microvilli on their surface that further increase the surface area for absorption. These cells absorb nutrients such as glucose, amino acids, and fatty acids, as well as vitamins and minerals, and transport them into the bloodstream for distribution to the rest of the body.

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  • 6. 

    Which of the following accessory organs stores bile?

    • Salivary glad

    • Liver

    • Gallbladder

    Correct Answer
    A. Gallbladder
    Explanation
    The gallbladder is the correct answer because it is an accessory organ that stores bile. Bile is produced by the liver and then stored in the gallbladder before being released into the small intestine to aid in the digestion and absorption of fats. The gallbladder acts as a storage reservoir for bile and releases it as needed.

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  • 7. 

    Where does the Kreb’s cycle take place?

    • Nucleus

    • Mitochondria

    • Golgi Apparatus

    Correct Answer
    A. Mitochondria
    Explanation
    The Kreb's cycle, also known as the citric acid cycle or the tricarboxylic acid cycle, takes place in the mitochondria. This cycle is an important part of cellular respiration, where glucose is broken down to produce energy in the form of ATP. The mitochondria, often referred to as the "powerhouse" of the cell, is responsible for producing the majority of ATP through processes like the Kreb's cycle. Therefore, the correct answer is mitochondria.

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  • 8. 

    Which of the following is not a major nutrient the body needs?

    • Carbohydrates

    • Phosphates

    • Proteins

    Correct Answer
    A. Phosphates
    Explanation
    Phosphates are not considered a major nutrient that the body needs. While carbohydrates and proteins are essential macronutrients that provide energy and support various bodily functions, phosphates are not directly classified as a major nutrient. However, phosphates are still important for the body as they play a crucial role in bone and teeth formation, energy production, and cell signaling.

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  • 9. 

    These cells may eventually become spermatozoa

    • Sertoli cells

    • Sustentacular cells

    • Spermatogenic cells

    Correct Answer
    A. Spermatogenic cells
    Explanation
    Spermatogenic cells are the cells in the testes that undergo spermatogenesis, the process of producing spermatozoa (sperm cells). These cells are responsible for the development and maturation of sperm cells, which eventually become fully functional spermatozoa. Sertoli cells, also known as sustentacular cells, are supportive cells in the testes that provide nourishment and support to the spermatogenic cells. Therefore, while both spermatogenic cells and Sertoli cells play important roles in sperm production, it is the spermatogenic cells that actually develop into spermatozoa.

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  • 10. 

    Chemical reactions that combine simple molecules and monomers to form complex structures are known as

    • Metabolism

    • Anabolism

    • Catabolism

    Correct Answer
    A. Anabolism
    Explanation
    Anabolism refers to the chemical reactions in which simple molecules and monomers are combined to form complex structures. This process requires energy and is responsible for the growth and maintenance of cells and tissues. It is the opposite of catabolism, which involves the breakdown of complex molecules into simpler ones. Metabolism, on the other hand, encompasses both anabolism and catabolism, and refers to all the chemical reactions that occur in an organism to maintain life.

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  • 11. 

    The fusion of the secondary oocyte and the sperm results in which developmental stage?

    • Female pronucleus

    • Male pronucleus

    • Zygote

    Correct Answer
    A. Zygote
    Explanation
    When the secondary oocyte and the sperm fuse together, they form a zygote. The zygote is the first developmental stage of an organism after fertilization. It is formed by the combination of genetic material from both the male and female pronuclei. The zygote then undergoes further development and cell division to eventually form an embryo.

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  • 12. 

    How many ATPs can come from substrate level phosphorylation during glycolysis?

    • 0

    • 1

    • 2

    Correct Answer
    A. 2
    Explanation
    During glycolysis, substrate level phosphorylation occurs twice, resulting in the production of two ATP molecules. This process involves the direct transfer of a phosphate group from a substrate molecule to ADP, forming ATP. Therefore, the correct answer is 2 ATPs.

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  • 13. 

    Fertilization normally occurs within which structure?

    • Ovary

    • Fallopian tube

    • Ovarian ligament

    Correct Answer
    A. Fallopian tube
    Explanation
    During fertilization, the sperm needs to reach the egg in order for fertilization to occur. The Fallopian tube is the structure where this process takes place. The egg is released from the ovary and travels through the Fallopian tube, where it can be fertilized by sperm. Therefore, the correct answer is the Fallopian tube.

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  • 14. 

    This is the principle bile pigment.

    • Stercobilin

    • Bilirubin

    • Both a and b

    Correct Answer
    A. Bilirubin
    Explanation
    Bilirubin is the correct answer because it is the principle bile pigment. Bile pigments are produced when red blood cells are broken down in the liver. Bilirubin is then excreted in bile and gives stool its characteristic brown color. Stercobilin is a breakdown product of bilirubin and contributes to the brown color of stool, but it is not the principle bile pigment. Therefore, the correct answer is Bilirubin.

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  • 15. 

    What is produced by the ovaries?

    • Secondary oocytes, progesterone and cortisol

    • Tertiary oocytes, insulin and estrogen

    • Secondary oocytes, estrogen and progesterone

    Correct Answer
    A. Secondary oocytes, estrogen and progesterone
    Explanation
    The ovaries produce secondary oocytes, estrogen, and progesterone. Secondary oocytes are the mature eggs that are released during ovulation. Estrogen is a hormone that plays a crucial role in the development and regulation of the female reproductive system. Progesterone is another hormone that is involved in the menstrual cycle and pregnancy. Together, these substances are essential for fertility and the proper functioning of the female reproductive system.

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  • 16. 

    Which of following processes is the primary function of the mouth?

    • Ingestion

    • Secretion

    • Mixing and propulsion

    Correct Answer
    A. Ingestion
    Explanation
    The primary function of the mouth is ingestion. Ingestion refers to the process of taking in food or drink through the mouth. It involves the intake of food and the initial breakdown of food particles by chewing and mixing with saliva. This process prepares the food for further digestion and absorption in the digestive system.

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  • 17. 

    Which of the following accessory organs produces a fluid that functions to emulsify dietary fats?

    • Teeth

    • Salivary glands

    • Liver

    Correct Answer
    A. Liver
    Explanation
    The liver produces a fluid called bile, which functions to emulsify dietary fats. Bile breaks down fats into smaller droplets, increasing their surface area and making it easier for enzymes to digest them. This process is important for the absorption and utilization of fats in the body. The teeth and salivary glands play a role in the initial mechanical breakdown and chemical digestion of food, but they do not produce a fluid specifically for emulsifying fats.

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  • 18. 

    This is composed of three cylindrical masses of erectile tissue each surrounded by a fibrous tissue.

    • Bladder

    • Penis

    • Urethra

    Correct Answer
    A. Penis
    Explanation
    The given answer is "Penis" because the description matches the anatomical structure of the penis, which is composed of three cylindrical masses of erectile tissue (corpora cavernosa and corpus spongiosum) surrounded by a fibrous tissue (tunica albuginea). The bladder and urethra are not composed of erectile tissue and do not match the given description.

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  • 19. 

    This layer of the GI tract is composed of areolar connective tissue that binds the mucosa to the muscularis.

    • Submucosa

    • Lamina propria

    • Epithelium

    Correct Answer
    A. Submucosa
    Explanation
    The submucosa is the correct answer because it is the layer of the GI tract that is composed of areolar connective tissue and it binds the mucosa to the muscularis. The submucosa provides support and nourishment to the mucosa, as well as contains blood vessels, lymphatics, and nerves.

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  • 20. 

    This is the heaviest gland of the body.

    • Heart

    • Liver

    • Pancreas

    Correct Answer
    A. Liver
    Explanation
    The liver is the correct answer because it is the heaviest gland in the body. The liver is a large organ located in the upper right side of the abdomen and it plays a crucial role in various metabolic processes. It produces bile, which helps in the digestion of fats, and also filters toxins from the blood. Additionally, the liver stores vitamins and minerals, produces blood-clotting proteins, and helps regulate blood sugar levels. Due to its size and numerous functions, the liver is considered the heaviest gland in the body.

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  • 21. 

    This is formed by the union of the duct from the seminal vesicle and the ampulla of the vas deferens.

    • Inguinal canal

    • Ejaculatory duct

    • Prostate

    Correct Answer
    A. Ejaculatory duct
    Explanation
    The explanation for the correct answer is that the ejaculatory duct is formed by the union of the duct from the seminal vesicle and the ampulla of the vas deferens. The inguinal canal is a passage in the abdominal wall, and the prostate is a gland in the male reproductive system.

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  • 22. 

    This digestive aid, produced by the stomach, begins digestion by denaturing proteins.

    • Bile

    • Hydrochloric acid

    • Water

    Correct Answer
    A. Hydrochloric acid
    Explanation
    Hydrochloric acid is the correct answer because it is produced by the stomach and plays a crucial role in the digestion process. It denatures proteins, breaking them down into smaller molecules that can be easily absorbed by the body. Without hydrochloric acid, proper digestion of proteins would not occur, leading to nutrient deficiencies and digestive issues. Bile, on the other hand, is produced by the liver and helps in the digestion of fats, while water does not have a significant role in the digestion of proteins.

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  • 23. 

    This is a principle hormone that releases milk into the mammary ducts.

    • PRH

    • Oxytocin

    • GnRH

    Correct Answer
    A. Oxytocin
    Explanation
    Oxytocin is the hormone responsible for releasing milk into the mammary ducts. It is produced by the hypothalamus and released by the posterior pituitary gland. Oxytocin is essential for the let-down reflex, which allows milk to be released from the mammary glands and flow through the ducts to the nipple for breastfeeding. This hormone is also involved in maternal bonding and social interactions.

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  • 24. 

    These are composed of prominent lymphatic nodules that function in the immune response.

    • Mucosa

    • Lamina propria

    • MALT

    Correct Answer
    A. MALT
    Explanation
    MALT stands for Mucosa-Associated Lymphoid Tissue. It is composed of prominent lymphatic nodules that function in the immune response. MALT is found in various mucosal tissues throughout the body, such as the respiratory tract, gastrointestinal tract, and genitourinary tract. These lymphoid nodules contain immune cells, such as lymphocytes, that help protect the mucosal surfaces from pathogens and foreign substances. MALT plays a crucial role in the body's defense against infections and maintaining immune homeostasis at mucosal sites.

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  • 25. 

    This structure is the site of sperm production.

    • Vas deferens

    • Seminiferous tubules

    • Albuginea

    Correct Answer
    A. Seminiferous tubules
    Explanation
    The seminiferous tubules are the structures in the testes where sperm production occurs. These tubules are responsible for the production and maturation of sperm cells through a process called spermatogenesis. The seminiferous tubules are lined with specialized cells called Sertoli cells, which support and nourish the developing sperm cells. Once the sperm cells are fully developed, they are released into the tubules and then transported to the epididymis through the vas deferens for storage and further maturation. The other options, vas deferens and albuginea, are not directly involved in sperm production.

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  • 26. 

    When the terminal phosphate is cut off ATP what is formed?

    • Adenosine diphosphate

    • GTP

    • C. Adenosine monophosphate

    Correct Answer
    A. Adenosine diphosphate
    Explanation
    When the terminal phosphate is cut off ATP, it forms Adenosine diphosphate (ADP). ATP is a molecule that stores and transfers energy in cells. When one of the phosphate groups is removed from ATP, it becomes ADP. This release of the phosphate group releases energy that can be used for various cellular processes. ADP can then be converted back to ATP through the addition of a phosphate group, thus replenishing the energy storage. GTP and Adenosine monophosphate (AMP) are different molecules and not formed when the terminal phosphate is cut off ATP.

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  • 27. 

    This reaction oxidizes acetyl co-A to produce carbon dioxide, ATP, NADH=H and FADH2.

    • Glycolysis

    • Formation of acetyl co-A

    • Krebs cycle

    Correct Answer
    A. Krebs cycle
    Explanation
    The Krebs cycle is a series of chemical reactions that occur in the mitochondria of cells. It is also known as the citric acid cycle or the tricarboxylic acid cycle. In this cycle, acetyl co-A is oxidized, leading to the production of carbon dioxide, ATP, NADH=H, and FADH2. This cycle plays a crucial role in cellular respiration, as it is responsible for the final breakdown of carbohydrates, fats, and proteins to generate energy in the form of ATP.

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  • 28. 

    Oxidation is

    • The removal of protons

    • The removal of electrons

    • The addition of protons

    Correct Answer
    A. The removal of electrons
    Explanation
    In the context of chemistry, oxidation refers to the process of losing electrons. When a substance undergoes oxidation, it loses electrons, resulting in an increase in its oxidation state. This process is often accompanied by the addition of oxygen or the removal of hydrogen atoms. Therefore, the correct answer is "The removal of electrons."

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  • 29. 

    Reduction is the

    • The addition of protons

    • The addition of electrons

    • None of the above

    Correct Answer
    A. The addition of electrons
    Explanation
    The correct answer is "The addition of electrons." Reduction is a chemical reaction where electrons are gained, resulting in a decrease in the oxidation state of a molecule or atom. This process is typically accompanied by the addition of electrons to the reactant. The addition of protons does not accurately describe reduction, as it is the addition of electrons that leads to a reduction reaction.

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  • 30. 

    The function of the epididymis is

    • Sperm maturation

    • Produce sperm

    • Speratid storage

    Correct Answer
    A. Sperm maturation
    Explanation
    The epididymis is responsible for sperm maturation. It is a coiled tube located on the back of each testicle, where sperm produced in the testes are stored and undergo a maturation process. This process involves the sperm acquiring the ability to swim and fertilize an egg. Therefore, the correct answer is "Sperm maturation."

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  • 31. 

    This plexus is located between the longitudinal and circular smooth muscle layers of the muscularis.

    • ENS

    • Myenteric plexus

    • Submucosal plexus

    Correct Answer
    A. Myenteric plexus
    Explanation
    The myenteric plexus is located between the longitudinal and circular smooth muscle layers of the muscularis. It is part of the enteric nervous system (ENS) and is responsible for regulating the motility of the gastrointestinal tract. It controls the contraction and relaxation of the muscles, allowing for the movement of food through the digestive system. The submucosal plexus, on the other hand, is located in the submucosa layer and is responsible for regulating secretions and blood flow in the digestive tract.

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  • 32. 

    Which of the following does is the primary function of the large intestine?

    • Chemical digestion

    • Absorption

    • Feces formation

    Correct Answer
    A. Feces formation
    Explanation
    The primary function of the large intestine is to form feces. The large intestine absorbs water and electrolytes from the remaining undigested food material, which helps in consolidating the waste and forming solid feces. It also houses bacteria that aid in the final breakdown of any remaining nutrients and the production of certain vitamins. Chemical digestion primarily occurs in the small intestine, while absorption of nutrients occurs in both the small intestine and the large intestine.

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  • 33. 

    The structure protects and regulates the temperature of the testes

    • Cremaster muscle

    • Tunica albuginea

    • Scrotum

    Correct Answer
    A. Scrotum
    Explanation
    The scrotum is the correct answer because it is the external sac that holds the testes. It helps to regulate the temperature of the testes by contracting or relaxing the muscles in response to changes in the external environment. The cremaster muscle, which is attached to the scrotum, helps to raise or lower the testes to maintain the optimal temperature for sperm production. The tunica albuginea, on the other hand, is a fibrous covering that surrounds each testis and provides structural support.

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  • 34. 

    Which of following processes is the function of the smooth muscle layer of the digestive system?

    • Ingestion

    • Secretion

    • Mixing and propulsion

    Correct Answer
    A. Mixing and propulsion
    Explanation
    The smooth muscle layer of the digestive system is responsible for mixing and propelling food along the digestive tract. This layer contracts and relaxes to create rhythmic movements called peristalsis, which helps to mix the food with digestive enzymes and move it through the esophagus, stomach, and intestines. This process ensures that the food is thoroughly broken down and absorbed by the body.

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  • 35. 

    This is a mechanism of heat transfer that involves direct contact.

    • Conduction

    • Convection

    • Radiation

    Correct Answer
    A. Conduction
    Explanation
    Conduction is the correct answer because it is a mechanism of heat transfer that involves direct contact. In conduction, heat is transferred from one object to another when they are in direct contact with each other. This transfer occurs through the collision of molecules within the objects, causing the heat energy to be transferred from the hotter object to the cooler one.

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  • 36. 

    This is the site of fertilization.

    • Urethra

    • Uterine tubes

    • Ovaries

    Correct Answer
    A. Uterine tubes
    Explanation
    The site of fertilization refers to the location where the sperm and egg meet to form a fertilized embryo. In this case, the correct answer is uterine tubes, also known as fallopian tubes. These tubes connect the ovaries to the uterus and serve as the pathway for the egg to travel from the ovary to the uterus. It is within the uterine tubes that fertilization typically occurs, as the sperm can meet and penetrate the egg here before it continues its journey towards the uterus for implantation.

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  • 37. 

    This is a permanent change in an allele.

    • Mutation

    • Phenotype

    • Genotype

    Correct Answer
    A. Mutation
    Explanation
    A mutation refers to a permanent change in an allele, which is a variant form of a gene. It can occur due to various factors such as errors during DNA replication or exposure to certain environmental factors. Mutations can lead to changes in the genotype, which is the genetic makeup of an individual, and ultimately affect the phenotype, which is the observable characteristics or traits of an organism. Therefore, the correct answer is "Mutation."

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  • 38. 

    How many stages of deglutition are there?

    • 2

    • 3

    • 4

    Correct Answer
    A. 3
    Explanation
    There are three stages of deglutition. Deglutition refers to the process of swallowing. The three stages include the oral phase, pharyngeal phase, and esophageal phase. In the oral phase, food is chewed and mixed with saliva to form a bolus. The pharyngeal phase involves the movement of the bolus from the back of the mouth into the throat and down the esophagus. Lastly, in the esophageal phase, the bolus is pushed down the esophagus and into the stomach.

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  • 39. 

    Most glucose that enters the liver is converted to

    • Pyruvic acid

    • Glycogen

    • Amino acids

    Correct Answer
    A. Glycogen
    Explanation
    Glucose that enters the liver is primarily converted into glycogen. Glycogen serves as a storage form of glucose in the liver and muscles, allowing for the regulation of blood sugar levels. When blood sugar levels are high, the liver converts excess glucose into glycogen and stores it. Later, when blood sugar levels drop, the liver can break down glycogen back into glucose and release it into the bloodstream to maintain stable blood sugar levels. This conversion process helps to maintain energy balance and ensure a steady supply of glucose for the body's energy needs.

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  • 40. 

    This will become the primary structure for exchange of material between the mother and the fetus.

    • Chorionic villi of the placenta

    • Amnion

    • Amnionic fluid

    Correct Answer
    A. Chorionic villi of the placenta
    Explanation
    The chorionic villi of the placenta serve as the primary structure for the exchange of material between the mother and the fetus. These finger-like projections extend from the chorion, which is the outermost layer of the fetal membrane. The chorionic villi contain blood vessels that allow for the exchange of oxygen, nutrients, and waste products between the mother's blood and the fetus. This exchange is crucial for the fetus's growth and development. The amnion and amniotic fluid, on the other hand, play a different role in protecting and cushioning the fetus within the amniotic sac.

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  • 41. 

    This is the time from the onset of labor to the complete dilation of the cervix.

    • Stage of dilation

    • Stage of expulsion

    • Placental stage

    Correct Answer
    A. Stage of dilation
    Explanation
    The correct answer is "Stage of dilation" because it refers to the time from the onset of labor to the complete dilation of the cervix. This stage is characterized by the gradual opening of the cervix to allow the baby to pass through the birth canal. It is an important stage in the process of childbirth and marks the beginning of active labor.

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  • 42. 

    This portion of the peritoneum drapes over the transverse colon and coils of the small intestine.

    • Greater omentum

    • Falciform ligament

    • Lesser omentum

    Correct Answer
    A. Greater omentum
    Explanation
    The correct answer is the greater omentum. The greater omentum is a fold of peritoneum that hangs down from the stomach and drapes over the transverse colon and coils of the small intestine. It functions to store fat and provide protection to the abdominal organs. The falciform ligament attaches the liver to the anterior abdominal wall, while the lesser omentum connects the liver to the lesser curvature of the stomach and the beginning of the duodenum.

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  • 43. 

    This structure of the stomach allows greater distension for food storage.

    • Pylorus

    • Rugae

    • Sphincter

    Correct Answer
    A. Rugae
    Explanation
    The rugae refers to the folds or wrinkles in the stomach lining that allow it to expand and stretch when food is consumed. These folds increase the surface area of the stomach, allowing for greater distension and storage of food. This enables the stomach to accommodate larger amounts of food and aids in the digestion and absorption process. The pylorus is the lower part of the stomach that connects to the small intestine, and the sphincter is a ring-like muscle that controls the passage of food between different parts of the digestive system. However, neither of these structures specifically contribute to the greater distension for food storage as the rugae does.

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  • 44. 

    This process is the synthesis of triglycerides.

    • Gluconeogensis

    • Lipoogenesis

    • Phosphorylation

    Correct Answer
    A. Lipoogenesis
    Explanation
    Lipoogenesis is the process of synthesizing triglycerides, which are a type of fat molecule. Gluconeogenesis is the production of glucose from non-carbohydrate sources, and phosphorylation is the addition of a phosphate group to a molecule. Therefore, lipoogenesis is the correct answer because it specifically refers to the synthesis of triglycerides.

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  • 45. 

    Where does glycolysis take place?

    • Cytosol

    • Plasma membrane

    • Nucleus

    Correct Answer
    A. Cytosol
    Explanation
    Glycolysis is the metabolic pathway that converts glucose into pyruvate. It is the first step in cellular respiration and occurs in the cytosol of the cell. The cytosol is the fluid portion of the cytoplasm, where many metabolic processes take place. The plasma membrane and nucleus are not involved in glycolysis.

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  • 46. 

    In the mouth, this runs posteriorly to the sides of the pharynx.

    • Uvula

    • Palatoglossal arch

    • Palatopharyngeal arch

    Correct Answer
    A. Palatopharyngeal arch
    Explanation
    The palatopharyngeal arch runs posteriorly to the sides of the pharynx in the mouth.

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  • 47. 

    Which of the following pancreatic enzymes acts to produce monosaccarides?

    • Chymotrypsin

    • Amylase

    • Trypsin

    Correct Answer
    A. Amylase
    Explanation
    Amylase is the correct answer because it is a pancreatic enzyme that acts to produce monosaccharides. Amylase specifically breaks down complex carbohydrates, such as starch and glycogen, into smaller units called monosaccharides. This process is important for the digestion and absorption of carbohydrates in the small intestine. Chymotrypsin and trypsin are pancreatic enzymes that primarily function to break down proteins.

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  • 48. 

    This structure regulates the flow of material into the colon.

    • Ileocecal sphincter

    • Pyloric sphincter

    • Appendix

    Correct Answer
    A. Ileocecal sphincter
    Explanation
    The ileocecal sphincter is responsible for regulating the flow of material from the small intestine into the colon. It acts as a valve, allowing the passage of digested food and waste into the large intestine while preventing backflow. This sphincter plays a crucial role in maintaining the proper functioning of the digestive system by controlling the movement of materials between these two sections of the gastrointestinal tract.

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  • 49. 

    Where can pyruvate dehydrogenase be found?

    • Lysozyme

    • Mitochondria

    • Interstitial fluid

    Correct Answer
    A. Mitochondria
    Explanation
    Pyruvate dehydrogenase can be found in the mitochondria. This enzyme plays a crucial role in the conversion of pyruvate, a product of glycolysis, into acetyl-CoA, which is further utilized in the citric acid cycle for energy production. The mitochondria is the powerhouse of the cell and is responsible for generating the majority of the cell's energy through processes like oxidative phosphorylation. Therefore, it makes sense for pyruvate dehydrogenase to be located in the mitochondria as it is an essential component of energy metabolism.

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  • Mar 21, 2023
    Quiz Edited by
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  • Nov 15, 2010
    Quiz Created by
    Sab1217
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