Glucagon Action

Definition

Glucagon action refers to how the hormone glucagon increases blood sugar levels by promoting the release of glucose from the liver.

Scientific / Technical Definition

Glucagon is a peptide hormone produced by the alpha cells of the pancreas. Its action involves binding to glucagon receptors on liver cells, triggering glycogenolysis and gluconeogenesis. These processes increase the release of glucose into the bloodstream, which is crucial during fasting states or periods of low blood sugar.

Benefits

• Helps maintain adequate blood sugar levels
• Supports energy supply during fasting
• Aids in the mobilization of energy reserves

Examples

• Regulation during fasting or between meals
• Response to low blood sugar after exercise

Additional Information

• Effects: Glucagon’s primary role is to prevent blood glucose levels from dropping too low, thereby maintaining normal energy balance and supporting metabolic functions.

Related Terms

• Insulin Action
• Glycogenolysis
• Gluconeogenesis
• Pancreas
• Blood Glucose

References

• Glucagon in Metabolism and Homeostasis
• Regulation of Blood Glucose