Which correctly describes the cause of the increase in alveolar ventilation that occurs when a person ascends to high altitude?

Question

Quizplus · Accepted Answer

As a person ascends to high altitude, the partial pressure of oxygen in inspired air decreases due to the reduction in total atmospheric pressure. This decrease in P_O2 of inspired air leads to a decrease in alveolar and arterial P_O2, which stimulates the peripheral chemoreceptors to increase alveolar ventilation. Additionally, the decrease in P_O2 can also lead to hypoxemia, which further stimulates ventilation through the peripheral chemoreceptors. Therefore, choice C is the correct answer describing the cause of increased alveolar ventilation at high altitude.

Which Correctly Describes the Cause of the Increase in Alveolar