What is another word for endoskeleton?
Pronunciation: [ˈɛndə͡ʊskˌɛlɪtən] (IPA) 
An endoskeleton is a structure located internally in the body of an organism. Synonyms for this term include internal skeleton, axial skeleton, and osseous system. The internal skeleton is composed of cartilage and bone, providing the framework for muscles to attach to and enabling movement. The axial skeleton refers specifically to the bones of the skull, vertebral column, and ribcage. The osseous system is a more scientific term used to describe the skeletal system of animals, including humans, that are composed of bones or cartilage. All these terms describe the same concept of a supportive structure found within the body of an organism.
