Muscoloskeletal System- Bones

I. Division of the skeletal system:

1. The axial bones are lined up vertically for support. They are parallel to the center of gravity;
2.  Appendicular bones  are mainly limbs and girdles that attach limbs to the axial system;
3. There are 206 named bones, ranging from enormous bones, such as the pelvis and the femur, to the tiny ossicles of the inner ear;

II. Primary functions of the skeleton system:

1. Movement, in conjunction with muscular attachments;
2. Support of the body;
3. Physical protection of internal organs 
4. Production of blood cells