The partial pressure of carbon dioxide and oxygen in atmospheric air is respectively about a. 104 mm Hg and 40 mm Hg b. 45 mm Hg and 40 mm Hg c. 40 mm Hg and 45 mm Hg d. 0.3 mm Hg and 159 mm Hg
Option D. The partial pressure is the pressure exerted by a particular gas within a mixture of gasses. The partial pressure of carbon dioxide at alveoli is about 40 mm of Hg and partial pressure of carbon dioxide at oxygenated blood is about 45 mm of Hg. Similarly, partial pressure of oxygen at alveoli is about 104 mm Hg.
