KROK 1 2017 – Question 185 · KROK (Medicine) · Physiology
During ascent into mountains a person develops increased respiration rate and rapid heart rate. What is the cause of these changes?
- A. Increase of blood pH
- B. Decrease of O2 partial pressure
- C. Increase of CO2 partial pressure
- D. Increase of nitrogen content in air
- E. Increase of air humidity
Hint
Consider what physical property of inspired air changes with altitude, and which sensors detect the resulting change in the blood.
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