Write a detailed account of gastro intestinal tract hormones

Explanation

1. Group of specialized endocrine cells present in gastro-intestinal tract secrets hormones such as gastrin , cholecystokinin (CCK) secretin and gastric inhibitory peptides (GIP) .
2. Gastrin acts on the gastric glands and stimulates the secretion of HCI and pepsinogen.
3. Choleeystokinin (CCK) is secreted by duodenum in response to the fat and acid in the diet
4. It acts on the gall bladder to release bile into duodenum and stimulates the secretion of pancreatic enzymes and its discharge.
5. Secretin acts on acini cells of pancreas to secrete bicarbonate ions and water to neutralize the acidity
6. Gastric inhibitory peptide (GIP) inhibits gastric secretion and motility