Which organ is responsible for secreting insulin?

The pancreas is the organ responsible for secreting insulin, which is a vital hormone for regulating blood glucose levels. Insulin plays a crucial role in allowing cells to absorb glucose from the bloodstream for energy or to store it as fat for later use. The pancreas contains clusters of cells known as the islets of Langerhans, where insulin-producing beta cells are located. When blood sugar levels rise, such as after eating, the pancreas releases insulin to help lower glucose levels back to a normal range. Understanding the function of the pancreas and its role in insulin secretion is essential for anyone studying human anatomy and physiology, especially in contexts related to metabolic health and diabetes management.