What is glucagon and how is it used in insulin management?

Glucagon is a hormone produced by the pancreas that plays a crucial role in glucose metabolism, especially in the context of insulin management. Its primary function is to raise blood glucose levels, which is essential during situations of hypoglycemia (low blood sugar). When blood sugar levels drop, glucagon is released into the bloodstream and signals the liver to convert stored glycogen into glucose and release it into the bloodstream, effectively increasing blood glucose levels.

This mechanism makes glucagon particularly important for individuals with diabetes who use insulin, as insulin lowers blood glucose levels. In cases where a person with diabetes experiences an insulin overdose or has not consumed enough carbohydrates, glucagon serves as a valuable emergency treatment option to prevent severe hypoglycemic events.

The other choices provided do not accurately describe glucagon. Some refer to functions or types of medication relevant to diabetes management but do not apply to glucagon itself. Understanding glucagon's role in managing blood glucose is essential for safe and effective diabetes care, especially in emergency situations.