To better understand Ewing's sarcoma, it helps to understand the anatomy of the bones and skeletal system.

The human skeleton can be divided into two sections:

• Axial skeleton: a total of 80 bones including the skull, spine, and chest
• Appendicular skeleton: a total of 126 bones including the pelvic girdle, limbs, feet and hands

Anatomy examples:

• Internal structure of bone
• The pelvic girdle
• The chest
• The skull
• The spine
• Skeletal system
• Upper extremity
• Lower extremity
• Feet