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