an indoskeleton is a skeleton that is inside your body. humans have indoskeletons.
An inside skeleton is called an indoskeleton, while a skeleton outside of a body is called an exoskeleton. Some examples of an indoskeleton may be humans, mice, etc. Cicatas are an example of an exoskeleton.
An exoskeleton is where the bones are on the outside of an organism. An example could be a crab, or insect. An endoskeleton is what you and I have, bones inside the body. Exo means outside and endo means inside or within by the way.