Q:

The central chemoreceptors in the brain stem increase breathing rate in response to which stimulus?

waelhammad
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2022-10-19
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The central chemoreceptors in the brain stem increase breathing rate in response to which stimulus?

  1. an increase in CO 2 concentration in the CSF
  2. an increase in CO 2 and H + concentration in the CSF
  3. a decrease in O 2 concentration in the CSF
  4. a decrease in O 2 concentration in the blood
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waelhammad
2022-10-19
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B: Carbon dioxide that enters the CSF will react with water to form hydronium ions and these ions stimulate the central chemoreceptors. 

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