Physiology

at a Glance

Jeremy P. T. Ward, Roger W. A. Linden

Multiple Choice: Chapter 14 Altitude and Aerospace Physiology

Question 14.1 Why does a climber's arterial PCO2 fall at altitudes above 2500 m?

A the amount of CO2 in the air is less
B to compensate for the alkalosis
C metabolism is reduced due to the low PO2
D the low arterial PO2 is stimulating ventilation