Which is a function of the pancreas?

The pancreas serves several vital functions in the body, one of which is the secretion of insulin. Insulin is a hormone that plays a crucial role in regulating blood glucose levels. When blood sugar levels rise, such as after eating, the pancreas releases insulin into the bloodstream. This hormone facilitates the uptake of glucose by cells, allowing them to use it for energy or store it for future use. Proper functioning of insulin is essential in managing diabetes and maintaining overall metabolic balance.

In contrast, while the pancreas does aid in digestion through the production of digestive enzymes, its primary hormonal role—particularly concerning glucose metabolism—is through insulin secretion. Functions such as defecation and the release of bilirubin are related to other organs and systems in the body; for instance, defecation pertains to the digestive system's elimination processes, while bilirubin is involved in liver function and bile production. Thus, the secretion of insulin correctly highlights one of the pancreas's key physiological roles.