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BIOD 151 MODULE 3 EXAM QUESTIONS & ANSWERS
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BIOD 151 MODULE 3 EXAM QUESTIONS & ANSWERS
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BIOD 151 MODULE 3 EXAM QUESTIONS & ANSWERSExplain why someone who has hypergastrinemia (excessive secretion of
gastrin) might develop gastric/stomach ulcers. - Answers-Gastrin stimulates
the secretions of pepsinogens and hydrochloric acid. Excess
amounts would lead to erosion of the stomach lining.
Explain in detail how the stomach contents enter the small intestine -
Answers-The pyloric sphincter (valve), located at the base of the stomach,
relaxes causing
a small quantity of chyme to pass through the opening into the first part of
the
small intestine.
This initiates a reflex that causes the muscles of the sphincter to contract
and
close the opening temporarily. Then the sphincter relaxes again and allows
more
chyme to enter.
Be able to label the following:
Stomach
Gallbladder
Jejunum (not small intestine)
Appendix (not large intestine)
Rectum (not large intestine - Answers-
what is the purpose of the hormone leptin - Answers-decrease hunger,
increase satiety
Which of the following statements is false?
A. Taste buds are located on the surface of the mouth and the wall of the
pharynx.
B. The ileocecal valve controls the entrance of chyme into to the small
intestine.
, C. The gall bladder, teeth, and tongue are considered accessory organs to
the digestive
system.
D. The alimentary canal is a continuous muscular tube, open at both ends -
Answers-B. The ileocecal valve controls the entrance of chyme into to the
small intestine.
(It controls the entrance to the large intestine)
True/False: Lipids can be divided into three categories: saturated fat,
unsaturated fat,
and cholesterol. - Answers-True
True/False: Anabolism combines smaller molecules to make larger
molecules - Answers-True
True/False: The oropharynx is the most superior region of the pharynx. -
Answers-False (The nasopharynx is the most superior region)
True/False: The pharynx has two types of skeletal muscle: circumferential
and oblique. - Answers-False: no oblique layer
True/False: The digestive work of salivary amylase is an example of
mechanical digestion. - Answers-False: chemical digestion
A patient is experiencing vitamin toxicity. What type of vitamin would be
causing this
toxicity? Explain your answer.
A. Water soluble vitamin
B. Fat soluble vitamin
C. All of the above - Answers-Fat soluble vitamins are stored within the
body's fat stores making it harder for
the body to rid itself of them.
Explain which digestive system functions are carried out by the large
intestine. - Answers-Absorption: In the large intestine water and electrolytes
are reabsorbed and
vitamins are absorbed.
Defecation: Feces travel to the rectum where it is excreted via the anus.
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