Question

After an accident, a victim experiences hypernea. Moments later, this person's cerebrospinal fluid will? - become...

After an accident, a victim experiences hypernea. Moments later, this person's cerebrospinal fluid will?

- become more acidic

- become more basic

- remain in the normal range

Which answer is correct and why?

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Answer #1

becomes more basic.

Hypernea is a condition of rapid breathing, when this happens there can be decreased concentration of CO2 in the body which results in decrease in arterial PCO2. In the short term the pH of the CSF is approximately inversely proportional to the arterial pCO2, a small drop in pCO2­ leads to an increase in pH of the CSF thereby making it more basic or alkaline.

Central chemoreceptors located in the medulla oblongata are very sensitive to small changes in arterial pCO2

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