Q.Which cells of islets of Langerhans produce a hormone insulin?

(b) Alpha cells — the α-cells of the islets of Langerhans in the pancreas secrete glucagon, which raises blood glucose level.

Glucagon comes from the alpha cells of the pancreatic islets.

The endocrine pancreas consists of islets of Langerhans containing several cell types: α (alpha) cells secrete glucagon, β (beta) cells secrete insulin, δ (delta) cells secrete somatostatin, and PP cells secrete pancreatic polypeptide. Glucagon acts antagonistically to insulin — when blood glucose falls, glucagon stimulates glycogenoly …

The beta (β) cells of the islets of Langerhans in the pancreas produce the hormone insulin.

Beta cells of the pancreatic islets secrete insulin; alpha cells secrete glucagon.

The islets of Langerhans in the pancreas contain several cell types: alpha (α) cells secrete glucagon (which raises blood glucose), beta (β) cells secrete insulin (which lowers blood glucose by promoting cellular glucose uptake and glycogen storage), delta (δ) cells secrete somatostatin, and F/PP cells secrete pancre …