Secretin vs. CCK
Acidic chyme entering the duodenum triggers release of which hormone, which stimulates bicarbonate secretion from the pancreas?
Answer A: explanation for every choice
A
Correct. Secretin stimulates bicarbonate release to neutralize stomach acid.
B
CCK responds to fats and proteins, stimulating digestive enzyme release and gallbladder contraction.
C
Gastrin stimulates acid secretion in the stomach.
D
Ghrelin stimulates hunger.
TakeawaySecretin: acid → bicarbonate. CCK: fat and protein → enzymes and bile.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID bb98.