Zoology-Mechanism of Breathing
NEET Zoology Mechanism of Breathing MCQ Question
Type: MCQ-conceptual-Medium-Class 11
If the thoracic chamber is an air-tight chamber, which of the following statements correctly explains the effect of a puncture wound on the thoracic wall on the process of breathing?
A
The lung on the affected side collapses due to loss of negative pressure.
B
Both lungs collapse immediately due to atmospheric pressure.
C
Breathing rate increases to compensate for reduced oxygen intake.
D
There is no effect on breathing as the other lung compensates.
Correct Answer
Option A
Detailed Explanation
The thoracic chamber is an air-tight chamber, which helps maintain negative pressure required for lung expansion. A puncture wound disrupts this, causing the lung on the affected side to collapse.
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