Science glossary film: Homeostasis

The maintenance of a stable internal environment. In the human body, glucose levels are regulated by the liver and pancreas, water levels are kept in balance by the kidneys, and internal temperature is kept constant by adjusting how much heat is lost through the skin – which is why we sweat when it's hot and shiver when it's cold.

In the human body, glucose levels are regulated by the liver and pancreas, water levels are kept in balance by the kidneys, and internal temperature is kept constant by adjusting how much heat is lost through the skin – which is why we sweat when it's hot and shiver when it's cold.