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