Breathing and Exchange of GasesEasy

Question

The partial pressure of oxygen in the alveoli of the lungs is

Options

A.

Equal to that in the blood

B.

More than that in the blood

C.

Less than that in the blood

D.

Less than that of carbon dioxide

Solution

Partial pressure of oxygen in alveoli of lungs is 104 mm of Hg that is more than that of blood in pulmonary artery (40 mm of Hg).

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