Control of respiration · Physiology

Central chemoreceptors are primarily sensitive to changes in:

  1. Arterial oxygen tension
  2. Blood pH
  3. Cerebrospinal fluid pH
  4. Plasma bicarbonate
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Correct answer: Cerebrospinal fluid pH

Central chemoreceptors respond to changes in cerebrospinal fluid pH. These changes reflect arterial carbon dioxide levels.

Difficulty: Medium Question 4 of 40

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