During exercise, how is peripheral resistance modulated in active muscles versus nonessential tissues?

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Study the AQA A Level PE Test for The Cardiovascular System. Prepare with flashcards and multiple choice questions, each with explanations. Get ready for exam success!

Multiple Choice

During exercise, how is peripheral resistance modulated in active muscles versus nonessential tissues?

Explanation:
During exercise, active muscles demand more blood, so their arterioles dilate, lowering peripheral resistance in those areas and increasing blood flow to meet the oxygen and nutrient needs. At the same time, nonessential tissues are more tightly constricted by sympathetic signals, raising their vascular resistance to redirect blood toward the working muscles. This combination means resistance decreases in active muscles via vasodilation.

During exercise, active muscles demand more blood, so their arterioles dilate, lowering peripheral resistance in those areas and increasing blood flow to meet the oxygen and nutrient needs. At the same time, nonessential tissues are more tightly constricted by sympathetic signals, raising their vascular resistance to redirect blood toward the working muscles. This combination means resistance decreases in active muscles via vasodilation.

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