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The partial pressure of oxygen in the al...

The partial pressure of oxygen in the alveolar air is

A

45 mm Hg

B

95 mm Hg

C

104 mm Hg

D

110 mm Hg

Text Solution

Verified by Experts

The correct Answer is:
C
The partial pressure of oxygen in alveoli is about 104mm Hg which is much higher than systemic capillaries of blood i.e. 94mm Hg. As a result, oxygen diffuses from alveoli into the blood and then to tissues that have `PO_(2)` 40 mm Hg
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