If a low-land resident ascends to a high mountain altitude, which of the following would be stimulated first?

A. peripheral chemoreceptors due to drop in PaCO2
B. peripheral chemoreceptors due to drop in PaO2
C. central chemoreceptors due to increase in H+ in CSF
D. central chemoreceptors due to drop in PaO2

Answer: B

Health Professions

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