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external intercostal muscle

   Also found in: Wikipedia 0.03 sec.
external intercostal muscle
n.
Any of the muscles with their origin from the lower border of a rib, with insertion into the upper border of the rib below, with nerve supply from the intercostal nerve, and that contract during inspiration and maintain tension in the intercostal spaces to resist mediolateral movement.


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? Mentioned in ? References in periodicals archive
 
[4] During activity, additional muscles are recruited, including the sternocleidomastoid and external intercostal muscles.
The cardiopulmonary system and movement dysfunction by Peel, Claire / Physical Therapy
The role of the external intercostal muscles during inspiration is controversial, but if they contract during inspiration, their contribution is certainly minimal compared with that of the parasternal muscles.
Considerations when testing and training the respiratory muscles by Denchman, Gail / Physical Therapy
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