Insulin secretion refers to the process by which insulin, a hormone produced by the pancreas, is released into the bloodstream. Insulin plays an important role in regulating blood sugar levels by allowing glucose (a type of sugar) from food to enter cells where it can be used for energy or stored for later use. When blood sugar levels rise after a meal, such as when carbohydrates are consumed, the pancreas releases insulin into the bloodstream in response. This helps to lower blood sugar levels by promoting glucose uptake and storage in cells throughout the body. In summary, insulin secretion is a vital process that helps maintain proper blood sugar balance and overall health.