Author Question: The hormones released by cells in the small intestine in response to the arrival of amino acids and ... (Read 29 times)

burton19126 · **on:** Aug 20, 2018

The hormones released by cells in the small intestine in response to the arrival of amino acids and smaller peptides are secretin and cholecystokinin. Together, these hormones stimulate

A. the production of hydrochloric acid and pepsinogen in the stomach.
B. the release of active enzymes from the pancreas.
C. the release of bicarbonate and proenzymes from the pancreas.
D. the release of di- and tripeptides from the absorptive cells that line the small intestine.

Question 2

HCl is important for protein digestion for two reasons: 1) it denatures proteins in the stomach, and 2)

A. it stimulates gastrin release from the stomach.
B. it converts pepsinogen into pepsin.
C. it converts pepsin into pepsinogen.
D. it maintains the acid environment necessary in the small intestine for protein digestion.