Control of blood glucose concentration by the pancreas and insulin

Regulating blood glucose

Glucose is needed by cells for respiration. It is important that the concentration of glucose in the blood is maintained at a constant level and controlled carefully.

Insulin is a hormone - produced by the pancreas - that regulates glucose concentrations in the blood.

If the blood glucose concentration is too high, the pancreas produces the hormone insulin that causes glucose to move from the blood into the cells. In liver and muscle cells, excess glucose is converted to glycogen for storage, and will be used at a later date.

The diagram illustrates how insulin works in the body:

How insulin works in the body when glucose levels are too high