Apodeme

[Sarah]

One of the processes of the shell which project inwards andunite with one another, in the thorax of many Crustacea.

[sky]

ridge-like ingrowth of the exoskeleton of an arthropod that supports internal organs and provides attachment points for muscles

[Faizan Zahid]

An ingrowth of the arthropod exoskeleton, serving as an attachment site for muscles.

[Ernestdyday]

An exoskeleton (from Greek έξω éxō outer and σκελετός skeletós skeleton) is an external skeleton that supports and protects an animals body, in contrast to an internal skeleton (endoskeleton) in for example, a human. In usage, some of the larger kinds of exoskeletons are known as shells. Examples of exoskeletons within animals include the arthropod exoskeleton shared by chelicerates, myriapods, crustaceans, and insects, as well as the shell of certain sponges and the mollusc shell shared by snails, clams, tusk shells, chitons and nautilus. Some animals, such as the turtle, have both an endoskeleton and an exoskeleton.

[Marionaduant]

An apodeme is an internal ridge or ingrowth on the exoskeleton of arthropods, which functions as an attachment site for muscles. It aids in providing structural support and facilitating movement.

[GlendynaSlese]

an inwardly directed process to which a muscle is attached.