Skeleton system

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Across
  1. 1. Thin,chord-like structure
  2. 3. 2 or more bones connected
  3. 5. Ring-like structure
  4. 11. muscle. Muscle controlled by us
  5. 13. Other name for femur
  6. 15. Other name for skeleton
  7. 17. muscle. Muscle not controlled by us
  8. 18. upper limb
  9. 19. U-shaped bone
  10. 20. Irregular bone
Down
  1. 2. Other name for backbone
  2. 4. Protects brain
  3. 6. protects heart & lungs
  4. 7. produces RBCs
  5. 8. Mineral Good for bone
  6. 9. Other name for spine
  7. 10. Long bone
  8. 12. Lower limb
  9. 14. Strong,elastic, yellowish tissue
  10. 16. bones Other name for ribs