Decreased insulin secretion during sustained activity allows skeletal muscle cells to take up extra glucose to maintain necessary ATP levels.

Question

Quizplus · Accepted Answer

During sustained activity, insulin secretion actually decreases to allow for increased glucose availability in the blood, which can then be taken up by skeletal muscle cells. The uptake of glucose by muscle cells during exercise is facilitated by an increase in GLUT4 transporters on the cell surface, a process that is independent of insulin.

Decreased Insulin Secretion During Sustained Activity Allows Skeletal Muscle Cells