Skeletal system

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Across
  1. 3. immature bone cells
  2. 4. a loss of bone mass
  3. 6. substance in the middle of long bones
  4. 7. considered the shaft of the bone
  5. 10. process of bone development
  6. 15. a membranous tissue that covers the surfaces of your bones
  7. 16. a condition characterized by abnormally low levels of calcium
  8. 19. the created balance in bones
  9. 20. Bones in chest that protect internal organs
Down
  1. 1. microscopic canals between the lacunae of ossified bone
  2. 2. in a growing bone, the region that contains the growth plate
  3. 5. where 2 bone surfaces come together
  4. 8. what the skeletal system consists of
  5. 9. a flexible collagen tissue attaching a muscle to a bone
  6. 11. shortest bone in the body
  7. 12. longest bone in the body
  8. 13. protects the brain
  9. 14. as mineral salts are deposited in the collagen fiber framework, they crystallize and the tissue hardens
  10. 17. membrane lining the medullary cavity
  11. 18. A hormone that promotes osteoblastic activity and the synthesis of bone matrix