Zoology-Respiratory Organs
NEET Zoology Respiratory Organs MCQ Question
Type: MCQ-fact-Easy-Class 11
What happens to the intra-pulmonary pressure during inspiration?
A
It decreases to less than atmospheric pressure.
B
It increases above atmospheric pressure.
C
It remains constant.
D
It fluctuates randomly.
Correct Answer
Option A
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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