Biology 0610 · IGCSE · Homeostasis

Homeostasis — practice question

A person's skin appears redder in a warm surroundings than in a cooler surroundings. Which explanation is correct?

  • AThe arterioles supplying capillaries in the skin vasodilate and less blood flows to the skin surface.
  • BThe arterioles supplying capillaries in the skin vasodilate and more blood flows to the skin surface.
  • CThe arterioles supplying capillaries in the skin vasoconstrict and more blood flows to the skin surface.
  • DThe arterioles supplying capillaries in the skin vasoconstrict and less blood flows to the skin surface.

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