The partial pressure of oxygen (PO₂)in a pulmonary capillary is about 40 mm Hg.Determine the partial pressure that will promote movement of oxygen into the pulmonary capillary from air in the alveolus. A)18 mm Hg B)104 mm Hg C)35 mm Hg D)40 mm Hg

Question

Quizplus · Accepted Answer

The partial pressure of oxygen in the alveolus is about 104 mm Hg. This high partial pressure gradient drives diffusion of oxygen from the alveolus into the pulmonary capillary, where the partial pressure of oxygen is lower (about 40 mm Hg). Therefore, the answer is B.

The Partial Pressure of Oxygen (PO2)in a Pulmonary Capillary Is

The Partial Pressure of Oxygen (PO₂)in a Pulmonary Capillary Is