HCl secretion and gastric motility

# Which of the following hormone's action results in HCl secretion and gastric motility?
A. GIP
B. Secretin
C. Gastrin
D. Cholecystokinin

The correct answer is C. Gastrin. 

Gastrin is stimulated by amíno acids and

peptides in lumen, distension. It stimulates

HCl secretion and gastric motility.

Other hormones of gastrointestinal system:

Cholecystokinin: Stimulated by fatty acids,

and amino acids in duodenum. Increases

pancreatic digestive enzyme secretion and

increases bile secretion from the

gallbladder.

Secretin: Stimulated by a low pH in the

duodenum. Increases bicarbonate release

from the pancreases and decreases gastric

motility and gastric acid secretion.

GIP: Stimulated by fat and glucose in the

duodenum. Increases insulin release and

decreases gastric motility and gastric acid secretion.