Question 1

Gastric hydrochloric acid secretion is regulated through both negative and positive feedback mechanisms.

Accepted Answer

A) True 
 B)False

Question 2

Where does the bicarbonate secreted by the pancreas come from?

Accepted Answer

A)  bicarbonate in the blood
B)  CO2 in the blood
C)  acini cells
D)  pancreatic isletsE) All of the above
F) C) and D)

Question 3

What is the function of Paneth cells of the small intestine?

Accepted Answer

A)  produce mucus
B)  divide by mitosis to make new mucosa cells
C)  produce lysozyme and antimicrobial peptides
D)  produce digestive enzymesE) B) and D)
F) B) and C)

Question 4

The process of waste removal is called

Accepted Answer

A)  defecation.
B)  mastication.
C)  deglutition.
D)  segmentation.E) A) and C)
F) B) and C)

Question 5

Long folds of the stomach's inner surface are called

Accepted Answer

A)  plicae.
B)  rugae.
C)  gastric pits.
D)  ghrelin.E) C) and D)
F) B) and C)

Question 6

What structures supplies autonomic nerves to the muscularis tunic?

Accepted Answer

A)  Meissner's plexus
B)  Auterbach's plexus
C)  myenteric plexus
D)  Both Auterbach's plexus and myenteric plexus are correct.E) None of the above
F) C) and D)

Question 7

Atrophy of the pancreatic acinar cells occurs in response to

Accepted Answer

A)  increased gastrin secretion.
B)  decreased sympathetic stimulation.
C)  decreased cholecystokinin secretion.
D)  increased secretin secretion.E) C) and D)
F) B) and C)

Question 8

Movement of water out of the large intestine is by

Accepted Answer

A)  active transport.
B)  cotransport.
C)  osmosis.
D)  All of the choices are correct.E) None of the above
F) B) and C)

Question 9

The gastrointestinal tract generates monomers from polymers by condensation.

Accepted Answer

A) True 
 B)False

Question 10

Cholesterol produced by the body is transported in the blood as

Accepted Answer

A)  high-density.
B)  low-density.
C)  very low-density.
D)  medium-density.E) B) and C)
F) All of the above

Question 11

Chewing of food is

Accepted Answer

A)  deglutition.
B)  mastication.
C)  peristalsis.
D)  segmentation.E) A) and B)
F) A) and C)

Question 12

Inhibiting hepatic function has no effect on blood clotting.

Accepted Answer

A) True 
 B)False

Question 13

What role do biles salts play in digestion?

Accepted Answer

A)  emulsify lipids for digestion by enzymes
B)  gives color to the feces
C)  needed for water reabsorption
D)  They play no role in digestion.E) None of the above
F) B) and C)

Question 14

Absorptive cells of the gastrointestinal tract are located within the mucosa.

Accepted Answer

A) True 
 B)False

Question 15

Sympathetic nerve fibers can cause the release of HCl from parietal cells.

Accepted Answer

A) True 
 B)False

Question 16

Bile salts are derivatives of

Accepted Answer

A)  sodium chloride.
B)  hemoglobin.
C)  bilirubin.
D)  cholesterol.E) A) and B)
F) C) and D)

Question 17

The initial phase of deglutition is a voluntary process.

Accepted Answer

A) True 
 B)False

Question 18

The first line of defense in the stomach against damaging acid and pepsin is the

Accepted Answer

A)  tight junctions of epithelial cells.
B)  rapid rate of epithelial cell replacement.
C)  adherent layer of mucus.
D)  release of gastrin.E) B) and C)
F) A) and B)

Question 19

Inadequate bile secretion will limit emulsification of fats.

Accepted Answer

A) True 
 B)False

Question 20

The primary function of the large intestine is

Accepted Answer

A)  water and electrolyte reabsorption.
B)  mineral absorption.
C)  hormone degradation.
D)  degrading toxins.E) A) and B)
F) A) and C)

Exam 18: The Digestive System

Absorptive cells of the gastrointestinal tract are located within the mucosa.

Correct AnswerverifiedShow Answer

Movement of water out of the large intestine is by

Correct AnswerverifiedShow Answer

Cholesterol produced by the body is transported in the blood as

Correct AnswerverifiedShow Answer

The initial phase of deglutition is a voluntary process.

Correct AnswerverifiedShow Answer

What structures supplies autonomic nerves to the muscularis tunic?

Correct AnswerverifiedShow Answer

Atrophy of the pancreatic acinar cells occurs in response to

Correct AnswerverifiedShow Answer

Where does the bicarbonate secreted by the pancreas come from?

Correct AnswerverifiedShow Answer

Sympathetic nerve fibers can cause the release of HCl from parietal cells.

Correct AnswerverifiedShow Answer

Bile salts are derivatives of

Correct AnswerverifiedShow Answer

The process of waste removal is called

Correct AnswerverifiedShow Answer

Inadequate bile secretion will limit emulsification of fats.

Correct AnswerverifiedShow Answer

Gastric hydrochloric acid secretion is regulated through both negative and positive feedback mechanisms.

Correct AnswerverifiedShow Answer

The gastrointestinal tract generates monomers from polymers by condensation.

Correct AnswerverifiedShow Answer

Long folds of the stomach's inner surface are called

Correct AnswerverifiedShow Answer

What role do biles salts play in digestion?

Correct AnswerverifiedShow Answer

Inhibiting hepatic function has no effect on blood clotting.

Correct AnswerverifiedShow Answer

Chewing of food is

Correct AnswerverifiedShow Answer

What is the function of Paneth cells of the small intestine?

Correct AnswerverifiedShow Answer

The first line of defense in the stomach against damaging acid and pepsin is the

Correct AnswerverifiedShow Answer

The primary function of the large intestine is

Correct AnswerverifiedShow Answer

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