Glucagon - GCSE Biology Definition

Glucagon is a hormone made by the pancreas, an organ in your body, and its main job is to help control your blood sugar levels. When your blood sugar, which is also known as glucose, is too low, glucagon tells your liver to release stored glucose, bringing your levels back to normal. This process ensures your body has enough energy, especially between meals or during exercise. Glucagon works with another hormone called insulin, which lowers blood sugar levels when they are too high. Together, they help keep your body's energy levels stable. Understanding how glucagon and insulin work is important for studying how the body manages energy and maintains balance.