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Biology · May / June 2019 · Paper 12 · Question 20

5090Temperature control

How will the skin of an athlete respond during a long run?

  1. Awidth of blood vessels in skin surface: decreases; sweating: decreases
  2. Bwidth of blood vessels in skin surface: decreases; sweating: increases
  3. Cwidth of blood vessels in skin surface: increases; sweating: decreases
  4. Dwidth of blood vessels in skin surface: increases; sweating: increases

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Correct answer: D. width of blood vessels in skin surface: increases; sweating: increases

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