The skeletal System

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Across
  1. 3. Formation of red bone marrow
  2. 6. Tearing down
  3. 9. Medial lower arm
  4. 10. Hollow air cavity within the bone
  5. 11. Pelvic bones
  6. 12. Carpals
  7. 13. Lateral lower arm
Down
  1. 1. Patella
  2. 2. Softspot
  3. 4. Rebuilding
  4. 5. Each end of the bone
  5. 7. Shoulder blade
  6. 8. Tibia
  7. 13. There are 12 pair