NEET Zoology Mechanism of Breathing MCQ Question
In the mechanism of breathing, if the atmospheric pressure is 760 mmHg and the alveolar pressure during inspiration drops to 758 mmHg, what is the net pressure difference driving air into the lungs?
2 mmHg
758 mmHg
760 mmHg
0 mmHg
Correct Answer
Detailed Explanation
The net pressure difference driving air into the lungs is the difference between atmospheric pressure and alveolar pressure during inspiration, which is 760 mmHg - 758 mmHg = 2 mmHg.
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