During exercise, the body requires energy and glucose levels need to be maintained. Epinephrine and glucagon are released to stimulate glycogenolysis in liver cells, which release glucose into the bloodstream to maintain blood glucose levels. Answer: E During prolonged exercise, skeletal muscles increase their rate of utilization of fatty acids for energy production. This helps to spare glucose for other tissues that require it, such as the brain.

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During Exercise

Question 31

Multiple Choice

During exercise,

A) Blood glucose levels fall dramatically
B) Epinephrine and glucagon stimulate glycogenolysis in liver cells
C) Decreased blood glucose and increased epinephrine stimulate insulin secretion
D) Epinephrine stimulates glucagon secretion and inhibits skeletal muscle uptake of glucose
E) Skeletal muscles increase their rate of utilization of fatty acids

Correct Answer: