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15 Cards in this Set

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  • Back
1. Secondary active transport is an essential process in intestinal epithelial cells for the absorption of:

a. glucose
b. fructose
c. water
d. all electrolytes
e. all of the above are correct



Use this information for the next two questions.
a. glucose
2. Lacteals and the lymph are important for transporting which of the following from the intestinal tract?

a. chylomicrons
b. glucose
c. proteins
d. vitamin B12
e. carbohydrates
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Due to a cancerous tumor a female patient has her ileum surgically removed. Six months after her recovery she complains that she always is tired and clinical tests show that her red blood cell count is low.

3. Which of the following most likely explains why she is tired.

a. inadequate absorption of carbohydrates
b. vitamin C deficiency
c. inadequate absorption of protein and amino acids
d. vitamin B12 deficiency
e. all of the above are correct
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Due to a cancerous tumor a female patient has her ileum surgically removed. Six months after her recovery she complains that she always is tired and clinical tests show that her red blood cell count is low.

4.for this patient, there will be an increase in bile

a. salts in the feces
b. acid levels in the portal venous blood
c. acid synthesis in the liver
d. acid levels in the hepatic venous blood
e. both ‘a’ and ‘c’ are correct
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5.Ingestion of a meal containing a high fat concentration would be expected to

a. stimulate somatostatin production
b. increase gastric motility
c. decrease bile secretion
d. slow gastric emptying
e. increase the absorption of water
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6. Hydrochloric acid (HCl) production

a. occurs in gastric parietal cells
b. is stimulated by increased vagal nerve activity
c. requires the enzyme carbonic anhydrase
d. is stimulated by activation of histamine H2 receptors
e. all of the above are correct
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7. The breakdown of hemoglobin contributes to the formation of

a. erythrocyanin
b. pancreatic enzymes
c. bile pigments
d. gastric chyme
e. nonabsorbable protein
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8. Entry of fat into the duodenum

a. leads to contraction of the sphincter of Oddi
b. stimulates secretion from pancreatic duct cells
c. leads to relaxation of the gallbladder
d. stimulates cholecystokinin (CCK) release
e. all of the above are corret
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9. Which of the following statements is (are) correct?

a. blood flows from the heart to small intestine via the hepatic vein
b. sympathetic stimulation increases blood flow to the GI tract
c. the hepatic artery provides oxygenated blood to the liver
d. blood flows from the liver to the heart via the portal vein
e. both ‘a’ and ‘c’ are correct
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10. Which of the following therapeutics decrease gastric acid production by inhibiting histamine H2-receptors? Parenthesis indicates active ingredient.

a. Rolaids (calcium carbonate, magnesium hydroxide)
b. Zantac (ranitidine)
c. Nexium (esomeprazole)
d. Tums (calcium carbonate)
e. Gelusil (aluminal hydroxide, magnesium hydroxide, simethicone)
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11. Increased gastric motility and acid production are associated with high circulating concentrations of

a. glucose
b. somatostatin
c. pepsin
d. bile salts
e. gastrin
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12. The migrating motor complex

a. is initiated by motilin
b. occurs during the inter-digestive phase
c. originates in the body of the esophagus
d. is responsible for emesis
e. none of the above is correct
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13. A human with a genetic mutation causing decreased enterokinase activity would be expected to have decreased activity of

a. lactase
b. lipase
c. sucrase
d. chymotrypsin
e. monoamine oxidase
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Smooth muscle electrical activity is measured in the GI tract. The frequency of the slow waves (BER) is 12 times per minute. Administration of substance A decreases the slow waves to 4 times per minute, Administration of substance B allows the depolarization phase of the slow waves to exceed the threshold potential. Administration of substance C prevents the depolarization phase of the slow waves to exceed the threshold potential.

14. Smooth muscle electrical activity is most likely being measured in the

a. stomach
b. esophagus
c. duodenum
d. ileum
e. cecum
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Smooth muscle electrical activity is measured in the GI tract. The frequency of the slow waves (BER) is 12 times per minute. Administration of substance A decreases the slow waves to 4 times per minute, Administration of substance B allows the depolarization phase of the slow waves to exceed the threshold potential. Administration of substance C prevents the depolarization phase of the slow waves to exceed the threshold potential.

15. Which of the following is most correct

a. administration of substance A will cause the smooth muscle to contract 4 times per minute
b. administration of substance B will cause the smooth muscle to contract 12 times per minute
c. c. administration of substance C will cause the smooth muscle to contract 12 times per minute
d. administration of substance A and C will cause the smooth muscle to contract 4 times per minute
e. both ‘a’ and ‘c’ are correct

16. Which of the following is most likely substance C

a. norepinephrine
b. acetylcholine
c. nitroglycerin
d. secretin
e. mucin
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