In the alveoli, the partial pressure of O2 is ____i_____ mm Hg, while the partial pressure of CO2 is ____ii_____ mm Hg.
The information in which alternative completes the given statement?
The partial pressure of oxygen in the alveoli is 104 mm Hg, while that of carbon dioxide is 40 mm Hg. This pressure difference helps in the exchange of gases between the alveoli and the blood capillaries.