| This is contrasted with the human skeletal system, which is classified as an endoskeleton. |
| The basic frame is an endoskeleton made of Urethane, responsible for the boot's flex characteristics. |
| This skeleton is enclosed by the epidermis and is thus an endoskeleton. |
| Suspension is the main function of the coelom in vertebrates, which achieve the largest body sizes among animals by virtue of an endoskeleton that does not need to be shed during growth. |
| The various bones composing the endoskeleton are united to one another either by sutures or by movable joints. |
| Perhaps the most striking feature of the endoskeleton of birds is its pneumaticity. |
