apodeme(n = noun.animal) - ridge-like ingrowth of the exoskeleton of an arthropod that supports internal organs and provides attachment points for muscles;
is a kind of anatomical structure, bodily structure, body structure, complex body part, structure
is a part of arthropod

   One of the processes of the shell which project inwards and unite with one another, in the thorax of many Crustacea. [1913 Webster]