Medical Dictionary


noun sub·cos·ta·lis \ˌsəb-käs-ˈtā-ləs\
plural sub·cos·ta·les \-ˌlēz\

Medical Definition of SUBCOSTALIS

:  any of a variable number of small muscles that arise on the inner surface of a rib, are inserted into the inner surface of the second or third rib below, and probably function to draw adjacent ribs together


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