Home › CBSE Class 11 (Science) › Biology › Breathing and Exchange of Gases › Inspiration occurs when the pressure inside the …
Inspiration occurs when the pressure inside the lungs is what relative to the atmosphere?
ATwice as high
BHigher than it
CEqual to it
DLower than it
Answer & Solution
Correct answer: D. Lower than it
Air flows in only when intra-pulmonary pressure falls below atmospheric pressure.
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