Glucagon is secreted in response to high blood glucose levels.

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Glucagon is actually secreted in response to low blood glucose levels. Its main function is to stimulate the liver to convert stored glycogen into glucose and release it into the bloodstream, thereby increasing blood glucose levels. In contrast, insulin is secreted in response to high blood glucose levels and facilitates glucose uptake and storage in cells, thereby decreasing blood glucose levels.

Glucagon Is Secreted in Response to High Blood Glucose Levels