dear student,
Histamine is chemical released by body as an allergic response.
Histamine in
Digestion:histamin plays a role in gastric secretion by helping to induce the production of acid in the stomach.
Histamine plays an essential role in the regulation of acid secretion by oxyntic cells in the stomach. The source of this histamine varies according to the species but in humans the amine is located largely in mast cells in the gastric mucosa. The control of acid output is complex, with neurocrine, endocrine and paracrine factors acting together in interdependent fashion. In particular, acetylcholine, gastrin and histamine modulate the release process.