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Medical Dictionary


noun il·io·cos·ta·lis \-käs-ˈtā-ləs\

Medical Definition of iliocostalis

  1. :  the lateral division of the sacrospinalis muscle that helps to keep the trunk erect and consists of three parts:a:  iliocostalis cervicisb:  iliocostalis lumborumc:  iliocostalis thoracis

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