Bone Structures

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Across
  1. 5. lattice of thin columns of bone
  2. 6. external layer of bone
  3. 8. have trabeculae
  4. 10. hollow, cylindrical space
  5. 12. proximal and distal ends of bones
  6. 13. secrete collagen fibers
Down
  1. 1. layer of cartilage covering epiphysis
  2. 2. tubes in bones, blood vessels and nerves
  3. 3. mature bone cells
  4. 4. replacement of cartilage by bone
  5. 7. break down extracellular matrix
  6. 9. tough sheath of irregular dense CT
  7. 11. bone shaft