In what part of the body is glucose primarily stored?

The primary storage site for glucose in the body is the liver, where it is stored in the form of glycogen. Glycogen acts as a reservoir of glucose that can be mobilized when needed, such as between meals or during physical activity. While muscles also store glucose in the form of glycogen and can utilize it for energy during exercise, the liver plays a crucial role in maintaining overall blood glucose levels and is the main organ responsible for synthesizing and breaking down glycogen as needed.

In addition to the liver, muscle glycogen is used primarily by the muscles themselves during strenuous exercise. Muscle tissue cannot contribute to blood glucose levels the way liver glycogen can. Therefore, although glucose is stored in both the liver and muscles, the liver is recognized as the primary storage organ for glucose in the body.