What is the primary role of Glucagon in the body?

Glucagon plays a crucial role in regulating blood glucose levels in the body, especially during periods of fasting or low carbohydrate intake. Its primary function is to increase the concentration of glucose in the bloodstream, which is essential for maintaining energy levels, especially in times of stress or when the body needs a quick source of fuel.

When blood glucose levels drop, glucagon is released from the alpha cells of the pancreas. It prompts the liver to engage in gluconeogenesis, the process of converting non-carbohydrate sources into glucose. Additionally, glucagon stimulates glycogenolysis, the breakdown of glycogen stored in the liver into glucose. This release of glucose into the bloodstream raises blood sugar levels, providing the necessary energy for cells throughout the body.

This response is critical for preventing hypoglycemia, a condition characterized by abnormally low blood sugar levels that can lead to serious complications such as confusion, loss of consciousness, or seizures. Thus, the primary role of glucagon is indeed to raise blood glucose levels, ensuring the body has adequate energy supply during critical situations.