Which cells in the pancreas produce insulin?

Insulin is produced by the beta cells of the pancreas, which are located in the islets of Langerhans. These cells play a crucial role in glucose metabolism by regulating blood sugar levels. When blood glucose levels rise, such as after eating, beta cells release insulin into the bloodstream. Insulin facilitates the uptake of glucose by cells, allowing them to use glucose for energy or store it for future use.

The other cell types in the pancreas are involved in different functions. For example, alpha cells produce glucagon, which raises blood sugar levels by stimulating the liver to release stored glucose. Delta cells secrete somatostatin, which regulates the secretion of both insulin and glucagon, while epsilon cells are believed to produce ghrelin, which is more associated with hunger regulation. Understanding these distinct roles helps clarify the specific function of beta cells in insulin production and regulation of glucose homeostasis.