At high altitudes the following changes takes place except_______________?
Correct answer: B. Increase in partial pressure of CO2
- A. Increase in respiratory rate
- B. Increase in partial pressure of CO2
- C. Increase in oxygen carrying capacity of blood
- D. Increases in depth of respiration
Explanation
High altitude causes hyperventilation, with increased respiratory rate and depth, and later increases oxygen-carrying capacity through erythropoiesis. Alveolar and arterial CO2 partial pressure generally fall because of hyperventilation, not rise.
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