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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.


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