Bones and skeletal tissue

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Across
  1. 3. formation of blood cellular components
  2. 5. a rounded protuberance at the end of some bones
  3. 6. a channel that is not a blood or lymphatic vessel
  4. 7. your most flexible cartilage
  5. 10. made up of a layer of spongy bone between two thin layers of compact bones
  6. 12. a passage, opening or communication between two cavities
  7. 14. the backbone
  8. 15. the small second segment of the leg of an insect
  9. 18. a small nodular lesion in the lungs or other tissues
  10. 19. a natural body opening or canal
  11. 20. depression commonly it refers to bones
Down
  1. 1. a thin layer,membrane, or plate of tissue
  2. 2. A long narrow depression occuring naturally on the surface of an organusm
  3. 4. a large prominence on a bone usually serving for the attachment of muscles
  4. 8. a connective tissue in the skeletal system
  5. 9. a head is the part of an organism that usually includes the ears,brain, forehead, cheeks
  6. 11. theoretical lines drawn through anatomical structures
  7. 13. the shaft or central part of a long bone
  8. 16. A crest is any of various anatomical features appearing as a raised point or ridge
  9. 17. rope from muscle to bone