Altitude-induced hypoxia is caused by what atmospheric condition?
A
Significantly less oxygen molecules at high altitude.
B
Insufficient partial pressure of the inhaled oxygen.✓ Correct Answer
C
Incorrect balance of oxygen and carbon dioxide.
Explanation
Air at altitude still contains about 21 percent oxygen; hypoxic hypoxia results from the lower partial pressure of inhaled oxygen, which reduces how much oxygen passes into the blood (PHAK Chapter 17). The percentage of oxygen does not change, and the balance of oxygen and CO2 describes hyperventilation.
Related aeromedical questions
Which is a common symptom of hyperventilation?Consumption of alcoholWhen penetrating fog while flying an approach at night, you might experience the illusion ofUnder 14 CFR part 91, what are the minimum number of hours that must pass after alcohol consumption ...When is ear blockage most likely to occur?
Keep practising
Study more FAA Airline Transport Pilot questions, or take a timed practice quiz.