Thermoregulation · Physiology

Cutaneous vasodilation during heat exposure mainly serves to:

  1. Reduce sweating from the skin surface
  2. Increase heat loss to the environment
  3. Decrease overall resting cardiac output
  4. Insulate and protect the warm body core
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Correct answer: Increase heat loss to the environment

Vasodilation increases blood flow to the skin, enhancing heat transfer to the environment. This supports heat loss by radiation and convection.

Difficulty: Medium Question 5 of 20

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