Mechanism of Breathing NEET 2025 Level Breathing and Exchange of Gases Zoology NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Exhalation of air into the lungs can be brought about by:

I:	Contraction of diaphragm
II:	Contraction of internal intercostal muscles
III:	Contraction of external intercostal muscles

1. Only I and II
2. Only II
3. Only I and III
4. Only III

Subtopic: Mechanism of Breathing |

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