Question

What does the hormone gastrin do?

Answer 1

Gastrin is a peptide hormone that stimulates secretions of gastric acid by the parietal cells of the stomach and aids in gastric motility.

Explanation:

Along with this, the additional functions of gastrin are:

1) It stimulates parietal cell maturation and fundal growth.
2) It causes chief cells to secrete pepsinogen.
3) It increases antral muscle mobility and promotes stomach contractions.
4) It helps to increase the rate of gastric emptying.
5) It plays a role in the relaxation of the ileocecal valve.
6) It also induces pancreatic secretions and gall bladder emptying.
7) Gastrin also contributes to the gastrocolic reflex.