Across
- 4. cartilage gradually becoming a bone
- 5. bone cells
- 9. joints in hip and the shoulder
- 10. a muscle in the arm
- 11. the middle of a long bone
- 12. lower back vertebra
- 14. chest vertebra
- 15. neck vertebra
- 18. protects brain
- 19. five vertebrae fused
- 21. muscle attached to the moving bone
- 22. muscle that work in pairs
- 23. the joint is surrounded by a tough fibrous .....
- 24. end of a long bone
- 25. a bone that produces red blood cells
Down
- 1. connects two bones
- 2. a role of the skeletal system
- 3. the bones ......... at joints
- 6. secreted by the synovial membrane
- 7. the outer surface (covering) of the bone
- 8. connects muscle to the bone
- 13. osteocytes are arranged in rings
- 15. outside hard material of long bone
- 16. muscle attached to the stationary bone
- 17. a movable joint
- 20. cartilage cells