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In rabbit the inspiration occurs by cont...

In rabbit the inspiration occurs by contraction of

A

External intercostal muscles and muscles of the diaphragm

B

Internal intercostal muscles and muscles of the diaphragm

C

External intercostal muscles only

D

Muscles of the diaphragm only

Text Solution

Verified by Experts

The correct Answer is:
a
During inspiration the diaphragm and extemal intercostal contract simultaneously. This moves the lateral thoracic walls outward and upward.
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