NURSING 3PA2 Lecture Notes - Lecture 5: Peptide, Alpha Cell, Adrenal Medulla
10 Apr 2018
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Promotes uptake of glucose by target cells and increases glycogen synthesis -prevents fat and glycogen breakdown inhibits gluconeogenesis and increases protein synthesis: amylin. Regulates blood sugar by delaying nutrient uptake through inhibition of gastric emptying and suppressing glucagon secretion after meals - Amylin is released at the same time as insulin by beta cells. It regulates blood sugar by delaying nutrient uptake through inhibition of gastric emptying and suppressing glucagon secretion after meals. Increases transport of aa into liver and stimulates gluconeogenesis: somatostatin. Decreases gi activity and inhibits release of insulin/glucagon. Extend time for food to be absorbed and extend the use of absorbed nutrients by tissues. Glucagon is a polypeptide molecule produced by the alpha cells and works opposite to insulin. Like insulin, it travels to the liver via the portal circulation. It exerts its main function in the liver.
