Vasoactive Intestinal Polypeptide
Main Entry: vasoactive intestinal polypeptide
Function: noun
: a protein hormone that consists of a chain of 28 amino acid residues, was first isolated from the gut of the pig, has been implicated as a neurotransmitter, and has a wide range of physiological activities (as stimulation of secretion by the pancreas and small intestine, vasodilatation, and inhibition of gastric juice production) -- abbreviation VIP; called also vasoactive intestinal peptide
VIP causes vasodilation, lowers arterial blood pressure, stimulates myocardial contractility, increases glycogenolysis and relaxes the smooth muscle of trachea, stomach and gall bladder. Belongs to the glucagon family.
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