During expiration occurs – (a) Contraction of diaphragm and externa – InterviewSolution

1.	During expiration occurs – (a) Contraction of diaphragm and external intercostal muscles. (b) Relaxation of diaphragm and external intercostal muscles. (c) Relaxation of the diaphragm only. (d) Contraction of diaphragm and external intercostal muscles.
Answer» The answer is (b) Relaxation of diaphragm and external intercostal muscles.

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