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The partial pressure of oxygen in the al...

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

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

Text Solution

Verified by Experts

The correct Answer is:
B
The partial pressure of oxygen in alveoli of lungs is less than that in blood.
Normal `PO_(2)` in alhcoli is 104 mmttg
& `PO_(2)` in oxygenated blood is 95 mm Hg
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