Bones role is to give protection and supports to the muscular parts. It also produce different blood cells, storage of minerals and endocrine regulation. By birth baby has around 270 bones parts but it decreases up to 206 bones by the fusion of some important bones together. Two main parts of the skeleton are appendicular and axial. Appendicular attached with the axial skeleton and formed shoulder girdle, the pelvic girdle and the bones of the upper and lower limbs where as the axis skeletons is formed by the vertebral column, the rib cage, the skull.