Q:

The respiratory centre in the brain is sensitive to

0

The respiratory centre in the brain is sensitive to


  1. an increase in H + concentration in the CSF.
  2. a decrease in O 2 concentration in the blood.
  3. an increase in H + concentration in the blood.
  4. a decrease in O 2 concentration in the CSF.

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A: The CSF is not buffered so is very sensitive to changes in hydronium ion concentration.

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