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The transversus thoracis is a triangular muscle that originates from the xiphoid cartilage and the sternum and inserts in the cartilage of the second through sixth ribs. It is innervated by the intercostal nerve and supplied by the intercostal arteries. This muscle aids in breathing by narrowing the chest for exhalation.
 Research Transversus Thoracis
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The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
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