Glucagon

Glucagon

a polypeptide hormone (3485 D) secreted by the cells of the islets Of Langerhans in response to a fall in blood sugar levels. Induces hyperglycaemia. A family of structurally related peptides includes glucagon like peptides 1 & 2 (encoded by the same gene), gastric inhibitory polypeptide, secretin, vasoactive intestinal peptide, growth hormone releasing Factor, pituitary adenylate cyclase activating polypeptide, exendins. A hormone secreted by the pancreas; stimulates increases in blood sugar levels in the blood (thus opposing the action of insulin).A protein consisting of 29 amino acids that is produced by the islets Of Langerhans.


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