The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are :
1. pO2 = 95 and pCO2 = 40 2. pO2 = 159 and pCO2 = 0.3 3. pO2 = 104 and pCO2 = 40 4. pO2 = 40 and pCO2 = 45
So‘rovnoma
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