HORMONES OF PANCREAS AND THEIR ROLE -
(i) Glucagon (Secreted by a-cells)
Target Cells. Glucagon acts on the cells of the liver and adipose tissue.
(ii) Insulin (Secreted by b-cells)
(ii) b-chain. It is made up of 30 amino acids. Both the branches or chains are bind together with cross bonds of disulphide bonds.
(iii) Somatostatin (SS)
It regulates the secretion of insulin and glucagon.
Target Cells. Both somatostatin and pancreatic polypeptide act on the cells of the pancreas.
(iv) Pancreatic Polypeptide (PP).
It appears that pancreatic polypeptide inhibits the release of digestive' secretion of the pancreas.
Both somatostatin and pancreatic polypeptide are relatively newly discovered hormones of the pancreas, and both are still being studied.