Insulin is secreted by:

AAlpha cells of pancreas

BLiver

CBeta cells of pancreatic islets of Langerhans

DAcinar cells

Answer & Solution

Correct answer: C. Beta cells of pancreatic islets of Langerhans

Islets of Langerhans (endocrine pancreas, ~2% of pancreatic mass) contain: α cells (glucagon), β cells (insulin), δ cells (somatostatin), F/PP cells (pancreatic polypeptide). Acinar cells are exocrine (digestive enzymes).

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