NURS 364 Lecture Notes - Lecture 8: Exocrine Gland, Glycogenesis, Glycogenolysis
14 Dec 2017
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Glucose---- glkycogen turns to glucose or you get it from diet. Ingested in diet, absorbed in small intestine, goes directly to liver. Brain and nervous tissue rely solely on glucose without nervous tissues shrink and lose function. Glycogenolysis: glycogen to glucose not enough glucose stored glycogen turns to glucose. Glycogenesis: glucose to glycogen--- too much glucose and it gets stores. Lipase breaks down fats into fatty acids & glycerol, glycerol enters glycolytic pathway to produce energy (gluconeogenesis) Beta cells secrete insulin makes glucose levels low. Alpha cells secrete glucagon--- when it is low. Delta cells secrete somatostatin (stops insulin & glucagon release) Promotes glucose uptake by target cells muscle, fat, liver. Stored in secretory granules and released from beta cells in pancreas. Glucagon when you have a low blood glucose it increases. Maintains blood sugar during periods of fasting (regulated by circulating glucose) Glucagon produces an increase in blood glucose levels. Glycogenolysis- in the liver convert glycogen to glucose.
