Diffusion of oxygen into the blood in pulmonary capillaries would occur when the partial pressure of the alveolar air is ___ mm Hg and the partial pressure of the blood in pulmonary capillaries is ___ mm Hg.

The correct answer is - 105, and 40.

Explanation:

In the case of the of the partial pressure of of oxygen in the alveolar air is about 105 mm Hg whereas the partial pressure of blood in pulmonary capillaries is about 40 mm Hg it result in the diffusion of oxygen into the blood in pulmonary capillaries would occur.

Due to the low partial pressure of blood in pulmonary capillaries and high in alveolar air is high, the result in diffusion of oxygen across the respiratory membrane.

Thus, the correct answer is - 105, and 40