The central chemoreceptors that influence the control of breathing respond to changes in the A)H⁺of mixed venous blood. B)PCO₂and H⁺ of cerebral spinal fluid. C)PO₂,pH,and PCO₂ of arterial blood. D)PCO₂ and H⁺ of mixed venous blood.

Question

Quizplus · Accepted Answer

The central chemoreceptors primarily respond to changes in the partial pressure of carbon dioxide (PCO2) and the hydrogen ion concentration (H+) of the cerebral spinal fluid, which reflect the levels of these substances in arterial blood. Changes in these parameters affect the brain's regulation of breathing to maintain homeostasis.

The Central Chemoreceptors That Influence the Control of Breathing Respond