NCAA CPL Human Performance Practice Questions - NCAA CPL Human Performance (Nigeria) Exam

Hypoxic hypoxia at high altitudes is primarily caused by which physiological or atmospheric factor?

A decrease in the partial pressure of atmospheric oxygen despite oxygen concentration remaining constant at 21% A reduction in the oxygen-carrying capacity of hemoglobin due to elevated carbon monoxide levels Impaired blood circulation resulting from excessive positive G-forces during steep turns Inability of tissue cells to absorb oxygen due to chemical toxin interference

Correct Answer:

A decrease in the partial pressure of atmospheric oxygen despite oxygen concentration remaining constant at 21%

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