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Human Physiology, 7/e
Stuart I Fox, Pierce College

The Digestive System

Multiple Choice Quiz

Please answer all questions



1

Accessory digestive organs include
A)the pharynx.
B)the gallbladder.
C)the esophagus.
D)the large intestine.
2

Nervous control of the GI tract would be impaired by damage to the
A)mucosa.
B)muscularis.
C)submucosa.
D)serosa.
3

Digestive enzymes are not secreted into
A)the esophagus.
B)the mouth.
C)the small intestine
D)the stomach.
4

Pepsin would be missing from the stomach contents of a person lacking
A)chief cells.
B)enterochromaffin-like cells.
C)goblet cells.
D)parietal cells.
5

Damage to the fundus would have the greatest effect on
A)mucus secretion.
B)pepsinogen secretion.
C)gastrin secretion.
D)histamine secretion.
6

The chyme entering the small intestine
A)is very basic.
B)is buffered by pancreatic bicarbonate secretion.
C)has not undergone any digestive processes.
D)passes through the cardiac sphincter.
7

Damage to which of the following would affect fat but not protein or carbohydrate absorption?
A)The microvilli.
B)Brunner's glands.
C)The lacteals.
D)The goblet cells.
8

Diarrhea may occur as a result of
A)decreased Na+ reabsorption by the large intestine.
B)decreased osmolarity of chyme entering the large intestine.
C)damage to the intestinal mucosa due to bacterial enterotoxins.
D)active transport of sodium chloride due to gluten consumption.
9

Bile
A)is synthesized by the gall bladder.
B)is stored in hepatic sinusoids.
C)is solely comprised of bile salts.
D)is required for maximal fat digestion and absorption.
10

The liver is responsible for secretion of all of the following except
A)ampicillin.
B)conjugated steroids.
C)penicillin.
D)streptomyocin.
11

The pancreas
A)is resistant to proteolytic digestion because of pancreatic trypsin inhibitor.
B)secretes bicarbonate to buffer the chyme.
C)secretes enzymes required for digestion of all macromolecules.
D)all of the above.
12

Inhibiting the secretion of cholecystokinin would
A)stimulate gastric motility.
B)stimulate gallbladder contraction.
C)stimulate pancreatic enzyme secretion.
D)stimulate HCl secretion by parietal cells.
13

Gastric acid secretion during the intestinal phase
A)is stimulated by vagal stimulation.
B)is inhibited by fat in the chyme.
C)is stimulated by gastrin secretion.
D)is stimulated by amino acids in the stomach.
14

Cholesterol removal and degradation is the primary function of the
A)chylomicrons.
B)high-density lipoproteins.
C)low-density lipoproteins.
D)very-low-density lipoproteins.
15

Which of the following enzymes is not bound to epithelial membranes of the small intestine?
A)Sucrase.
B)Aminopeptidase.
C)Carboxypeptidase.
D)Maltase.