Which tissue contains the majority of the body's glycogen stores?

The majority of the body's glycogen stores are found in muscle tissue. Glycogen serves as a vital energy reserve that can be quickly mobilized during physical activity. Muscle tissues have a heightened need for energy, especially during exercise, leading them to store larger amounts of glycogen than other tissues. While the liver does store glycogen and plays a critical role in maintaining blood glucose levels by releasing glucose into the bloodstream, its total glycogen content is less than that of muscle tissue.

Adipose tissue primarily stores fat rather than glycogen, serving different metabolic functions. The kidneys also have a minor role in glucose metabolism and do not serve as significant glycogen storage sites compared to muscle. Therefore, muscle tissue is correctly identified as containing the majority of the body's glycogen stores, which is essential for energy during sustained physical activity.