A) rennin
B) gastrin
C) cholecystokinin
D) none of the above
Correct Answer: C
Solution :
Cholecystoldnin (Chol-bile; cyst- bladder, kinin-to remove), is the hormone secreted by the epithelium of entire small intestine along with pancreozymin (zymin-enzyme producer), cholecystokinin stimulates gall bladder to release bile. Gastrin is secreted by gastrin cells (G cells) of pyloric stomach. It stimulates gastric glands to secrete and release the gastric juice. It also stimulates gastric mobility. Rennin is an enzyme present in infants stomach. It catalyse the milk protein, casein into paracasein. Rennin is present in inactive form, as prorennin which is activated into rennin in presence of HCl.
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