Question

How does the hormone secretin help in digestion?


It inhibits movement of food and reduces appetite.



It stimulates the pancreas and the liver to produce secretions.

How does the hormone secretin help in digestion?


It inhibits movement of food and reduces appetite.



It stimulates the pancreas and the liver to produce secretions.



It regulates secretion of gastric juices in the stomach.

How does the hormone secretin help in digestion?


It inhibits movement of food and reduces appetite.



It stimulates the pancreas and the liver to produce secretions.

Answer 1

SECRETIN is a peptide hormone produced in the S cells of the duodenum. Its primary effect is to regulate the pH of the duodenal contents via the control of gastric acid secretion and buffering with bicarbonate. Secretin is secreted in response to low duodenal pH due to chyme, which contains hydrochloric acid, entering from the stomach. Secretin stimulates the secretion of bicarbonate (base) from the liver, pancreas, and duodenal Brunner's glands in order to buffer the incoming protons of the acidic chyme. It also enhances the effects of cholecystokinin. It is known to promote the normal growth and maintenance of the pancreas. It counteracts blood glucose concentration spikes by triggering increased insulin release, following oral glucose intake. It also reduces acid secretion from the stomach by inhibiting gastrin release from G cells.