Alpha cell

Definition

Alpha cells are a type of cell found in the pancreas that produce and secrete glucagon, a hormone that increases blood glucose levels by stimulating the liver to convert stored glycogen into glucose. They play a crucial role in maintaining glucose homeostasis, especially during fasting states.

Related terms

Glucagon:

A hormone produced by alpha cells that raises blood glucose levels by promoting the breakdown of glycogen to glucose in the liver.

Beta Cell: Cells in the pancreas that produce insulin, a hormone that lowers blood glucose levels by facilitating the uptake of glucose into cells.

Glycogen:

A stored form of glucose found in the liver and muscles, which can be converted back into glucose when needed for energy