Q144 / 180 · NEET 2016 (Phase 2) · Zoology

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

A
Equal to that in the blood
Correct answer
B
More than that in the blood
C
Less than that in the blood
D
Less than that of carbon dioxide

Solution

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

Hence, the correct answer is option: 'B'.

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