Thermoregulation · Physiology

Which substance acts as an endogenous pyrogen during fever?

  1. Histamine
  2. Interleukin-1
  3. Acetylcholine
  4. Serotonin
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Correct answer: Interleukin-1

Interleukin-1 is released during infection and acts on the hypothalamus. It increases prostaglandin synthesis, raising the temperature set point.

Difficulty: Medium Question 10 of 20

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