NEET UG BIOLOGY MCQ: BREATHING AND EXCHANGE OF GASES

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Understanding +4 | -1

I. Intra pulmonary pressure remains less than the atmospheric pressure
II. There is negative pressure in the lungs than the atmospheric pressure
In which of the above two situations inspiration takes place?
Choose the correct option accordingly?

View answer and explanation

Correct option: C

Both I and II

Option C (Both I and II) is correct because inspiration occurs when the intrapulmonary pressure is less than atmospheric pressure, which is the same as saying there is negative pressure in the lungs compared to the atmosphere.

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