In order to meet the increased oxygen demands of muscle during exercise, two major adjustments in blood flow must be made
A. an increase in muscle blood flow and an increase in blood flow to the liver.
B. an increase in heart rate and diastolic blood pressure.
C. an increase in blood flow to both the gut and brain.
D. an increase in cardiac output and a redistribution of blood flow from inactive tissues to skeletal muscles.
Answer: D
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