Control of respiration · Physiology

Which change would decrease the firing of central chemoreceptors?

  1. Increase in arterial CO2
  2. Decrease in CSF pH
  3. Increase in CSF pH
  4. Increase in hydrogen ion concentration
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Correct answer: Increase in CSF pH

An increase in CSF pH reduces central chemoreceptor stimulation. This leads to a decrease in respiratory drive.

Difficulty: Medium Question 16 of 40

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