The Central Chemoreceptors Are Important in Regulating the Depth and Rate

question 8

Multiple Choice

The central chemoreceptors are important in regulating the depth and rate of ventilation.The blood-brain barrier is impermeable to all of the following substances except:

• A) CO₂.
• B) O₂.
• C) HCO₃.
• D) H⁺.

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