Deck 35: Gastrointestinal Function

Question 1

The structure and secretions of the salivary gland most closely resemble those of the

A) gastric gland.
B) exocrine pancreas.
C) liver.
D) gallbladder.

Answer 1

exocrine pancreas.

Question 2

The propulsive movement of the GI tract is called

A) peristalsis.
B) transmission.
C) contraction.
D) constriction.

Answer 2

peristalsis.

Question 3

Pancreatic secretions are high in

A) hydrochloric acid.
B) bicarbonate ions.
C) intrinsic factor.
D) secretin.

Answer 3

bicarbonate ions.

Question 4

How much fluid is secreted from the intestinal glands daily?

A) 1/2 liter
B) 1 liter
C) 2 liters
D) 4 liters

Question 5

Chief cells secrete

A) pepsinogen.
B) hydrogen chloride.
C) intrinsic factor.
D) gastrin.

Question 6

Brush-border enzymes are produced by ________ cells.

A) pancreatic acinar
B) gastric mucosa
C) intestinal epithelial
D) goblet

Question 7

Failure of normal partitioning between the foregut and midgut can lead to a congenital condition known as

A) tracheoesophageal fistula.
B) esophageal atresia.
C) intestinal atresia.
D) anal agenesis.

Question 8

Which enzyme assists with protein digestion?

A) Amylase
B) Chymotrypsin
C) Lactase
D) Lipase

Question 9

Absorption of glucose and amino acids across the intestinal epithelium occurs by

A) endocytosis.
B) ATP-driven transporters.
C) sodium-dependent carriers.
D) passive diffusion.

Question 10

Which statement regarding pepsin is true?

A) It is secreted by parietal cells in gastric pits.
B) It is secreted as an inactive proenzyme.
C) It accomplishes most of the digestion of dietary protein.
D) It is permanently denatured by a pH less than 4.0.

Question 11

The primary stimulus for pancreatic secretion is

A) gastrin.
B) histamine.
C) acetylcholine.
D) secretin.

Question 12

Which can be absorbed through the intestinal epithelia without further digestion?

A) Sucrose
B) Lactose
C) Glucose
D) Glycogen

Question 13

Older individuals may experience which change in the mouth?

A) Increase in salivation
B) Increase in taste for salt
C) Increase in the number of papillae
D) Increased exposure of dentin

Question 14

The action of bile is to

A) emulsify fats.
B) digest cellulose.
C) convert sucrose.
D) release free amino acids.

Question 15

Most nutrient digestion and absorption occurs in the

A) stomach.
B) small intestine.
C) large intestine.
D) cecum.

Question 16

Which is associated with contraction of the gallbladder?

A) Cholecystokinin
B) Morphine
C) Norepinephrine
D) Gastrin

Question 17

The sympathetic nerve endings in the GI tract secrete

A) acetylcholine.
B) histamine.
C) gastrin.
D) norepinephrine.

Question 18

Most of the parasympathetic innervation of the GI tract is supplied by the

A) hypoglossal nerves.
B) enteric nervous system.
C) vagus nerves.
D) celiac ganglia.

Question 19

Parasympathetic stimulation of the stomach would

A) decrease motility.
B) decrease hydrogen chloride secretion.
C) inhibit acidity.
D) stimulate motility.

Question 20

The portion of the stomach that controls gastric emptying is the

A) fundus.
B) body.
C) antrum.
D) pylorus.

Question 21

Carbohydrates are absorbed in the form of

A) polysaccharides.
B) disaccharides.
C) monosaccharides.
D) monoglycerides.

Question 22

Which are major pairs of salivary glands?

A) Parotid
B) Parietal
C) Submandibular
D) Sublingual
E) Pituitary