Endoskeletons provide support for the body, protect internal organs, and allow for movement through contraction of muscles attached to the skeleton. The human skeleton is an endoskeleton that consists of 206 bones in the adult.

What is Funtime Freddy's endoskeleton called?

Yenndo is a funtime endoskeleton and a minor antagonist from Sister Location. Despite his small role in the main game, he also appears in the Custom Night mode.

What do endoskeletons include?

The vertebrate endoskeleton is basically made up of two types of tissues (bone and cartilage). During early embryonic development the endoskeleton is composed of notochord and cartilage. The notochord in most vertebrates is replaced by the vertebral column and cartilage is replaced by bone in most adults.