Support: refers to the skeleton and its role in holding up the body structure and giving shape.
Movement: refers to the change in the position of one part of the body in relation to another part.
Locomotion: refers to the movement of the entire body from one place to another.
Humans and all other vertebrates have skeletons based on the following plan. The skull, backbone (vertebral column) and rib cage form the main axis of the body and so are called axial skeleton. The shoulder blades, hips and the arm and leg bones are attached (appended) to the axial bones and so are called the appendicular skeleton.
The bone contains 50% water and 50% solid matter. The solid matter consists of 57% calcium carbonate and calcium phosphate and 33% organic matter
FUNCTIONS OF BONES