NEET Zoology Respiratory Organs Assertion Reason Question
Assertion (A): Inspiration occurs when the intra-pulmonary pressure is lower than the atmospheric pressure.
Reason (R): Relaxation of the diaphragm and intercostal muscles increases the thoracic volume.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
Inspiration occurs due to a decrease in intra-pulmonary pressure below atmospheric pressure caused by contraction, not relaxation, of the diaphragm and intercostal muscles.
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