The pancreas

Although only the same weight as an apple, the pancreas fulfils endocrine and exocrine functions, and coordinates metabolism throughout the body. For example, insulin, perhaps the best-known pancreatic hormone, not only influences glucose metabolism but also helps to regulate protein and fat metabolism (thus explaining why diabetes is more than just a disease of sugar). The secretion of pancreatic hormones is highly coordinated to exert a concerted effect on the metabolism of a range of organs, from adipose tissue to muscle.
Source: Anaesthesia and intensive care medicine - Category: Anesthesiology Authors: Tags: Physiology Source Type: research