It is known that secretin:
A)It is a large protein hormone synthesized by the pancreas,together with pancreozymin.
B)Is a small polypeptide synthesized by the intestinal mucosa .
C)Neutralizes directly the acid chyme that passes through the pylorus.
D)Has an optimal activity at a PH equal to 8.4.

Question

Quizplus · Accepted Answer

Secretin is indeed a small polypeptide hormone that is synthesized by the S cells of the duodenum, which is part of the intestinal mucosa. It is released in response to acidic chyme entering the small intestine from the stomach, and its primary function is to stimulate the pancreas to release bicarbonate-rich fluid, indirectly neutralizing the acidity of the chyme.

It Is Known That Secretin