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Which muscles help us to increase the strength of expiration ?
Option: 1
Cardiac muscles
Option: 2
Abdominal muscles
Option: 3
Internal intercostal muscles
Option: 4
Both (2) and (3)
Answers (1)
Mechanism of Expiration -
Relaxation of the diaphragm and the inter-costal muscles returns the diaphragm and sternum to their normal positions and reduce the thoracic volume and thereby the pulmonary volume
- wherein
Correct option is 2
View full answer
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