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The central chemoreceptors that influence the control of breathing respond to changes in the _________. a. Hâ‚‚ of mixed venous blood b. PCOâ‚‚ and Hâ‚‚ of cerebral spinal fluid c. POâ‚‚, pH, and PCOâ‚‚ of arterial blood d. PCOâ‚‚ and Hâ‚‚ of mixed venous blood

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Answer:

The correct answer is option b. "PCOâ‚‚ and Hâ‚‚ of cerebral spinal fluid".

Explanation:

The central respiratory chemoreceptors (CRCs) are cells involved in respiratory feedback and are located in the ventrolateral surface of medulla oblongata. CRCs respond to changes in the PCOâ‚‚ and Hâ‚‚ of cerebral spinal fluid, contributing to the stimulation of breathing mainly by performing two processes: hypercapnia or metabolic acidosis.

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