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  • Which accessory muscle contracts to elevate the sternum during inspiration?  Option: 1 Pectoralis minor<

Which accessory muscle contracts to elevate the sternum during inspiration?

 

Option: 1

Pectoralis minor


Option: 2

Sternocleidomastoid


Option: 3

Both a and b

 


Option: 4

None of the above


Answers (1)

best_answer

The sternocleidomastoid muscle contracts during inspiration to elevate the sternum and increase the volume of the thoracic cavity.

Option 2 is the correct answer.

Posted by

shivangi.shekhar

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