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NEET Previous Year Question

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

Topic: NEET PYQ

Answer: C. Full step-by-step solution below.

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

Correct answer: C

Solution

(c) In alveoli, p O_{2} \approx 104 mmHg, which is higher than deoxygenated blood (p O_{2} \approx 40 mmHg). Therefore, oxygen diffuses from alveoli into blood.

More Breathing & Exchange of Gases PYQs

$Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing\dots$
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