Q.Name the secretion of alpha, beta and delta cells of islets of langerhans. Explain their role.
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Start your 14-day free trial to unlock the full solution →Alpha cells secrete glucagon (raises glucose), beta cells secrete insulin (lowers glucose), delta cells secrete somatostatin (inhibits both).
The islets of Langerhans hold several named cell types, three of which are asked about here.
Step 1 (Alpha/D cells, ~20%). Secrete glucagon, which stimulates the liver toward glycogenolysis (glycogen breakdown), raising blood glucose level -- important between meals or during fasting.
Step 2 (Beta/E cells, ~70%). Secrete insulin, which stimulates the liver and muscles toward glycogenesis (glycogen synthesis), lowering blood glucose level -- important after a meal, when glucose is abundant. …
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