Digestive System

Question 1

Regarding salivation, which statement is true?
A. The central nervous system controls salivation.
B. Cholinergic fibers stimulate the salivary glands.
C. Atropine increases salivary secretion.
D. ß-adrenergic stimulation decreases salivary secretion.

Answer 1

B. Cholinergic fibers stimulate the salivary glands.

Question 2

Regarding the esophagus, which is a true statement?
A. The upper third is smooth muscle. Incorrect
B. The middle third is innervated by motor fibers.
C. The lower third is striated muscle.
D. The lower third is innervated by nerve fibers.

Answer 2

D. The lower third is innervated by nerve fibers.

Question 3

Which hormone is responsible for the inhibition of the stomach contraction?
A. Gastrin
B. Motilin
C. Secretin 
D. Cholecystokinin

Answer 3

C. Secretin

Question 4

Which cells of the stomach secrete hydrochloric acid and intrinsic factor?
A. Parietal
B. Chief 
C. G
D. Enterochromaffin-like

Answer 4

A. Parietal