KROK 1 2023 – Question 50 · KROK (Medicine) · Physiology
There is a time limit for how long a person can stay at an altitude of over 8000 meters above sea level without oxygen tanks. What is the limiting factor for the life under such conditions?
- A. Ultraviolet radiation level
- B. Temperature
- C. Earth’s gravity
- D. Humidity level
- E. Partial pressure of oxygen in air
Hint
Think about which of the listed factors directly determines how much oxygen can diffuse from alveolar air into the blood, and which of them cannot be offset by clothing, shelter or acclimatization.
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