Q:

The increase in blood flow to muscle in an exercising limb is related to a rise in

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 The increase in blood flow to muscle in an exercising limb is related to a rise in.


  1. Local PCO2.
  2. Local H+ concentration.
  3. Local muscle temperature.
  4. . Arterial pressure.
  5. Vasodilator nerve activity.

All Answers

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A. True This causes local vasodilation.

B. True Acidosis also favours vasodilation.

C. True Heat dilates blood vessels.

D. False Exercising a limb causes little change in mean arterial pressure.

E. False Vasomotor nerves are not involved in exercise hyperaemia

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