NEET Zoology Respiratory Organs MCQ Question
What is the effect of an increase in pulmonary volume during inspiration?
It decreases intra-pulmonary pressure below atmospheric pressure.
It increases intra-pulmonary pressure above atmospheric pressure.
It causes the diaphragm to contract.
It prevents air from entering the lungs.
Correct Answer
Detailed Explanation
During inspiration, an increase in pulmonary volume leads to a decrease in intra-pulmonary pressure, which allows air to flow into the lungs. This is explained in the context of how thoracic volume changes during breathing.
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