NEET Zoology Respiratory Organs MCQ Question
What happens to the intra-pulmonary pressure during inspiration?
It decreases to less than atmospheric pressure.
It increases above atmospheric pressure.
It remains constant.
It fluctuates randomly.
Correct Answer
Detailed Explanation
During inspiration, the increase in thoracic volume leads to a decrease in intra-pulmonary pressure to less than atmospheric pressure, which forces air into the lungs.
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