Bones and skeletal tissue

3. formation of blood cellular components
5. a rounded protuberance at the end of some bones
6. a channel that is not a blood or lymphatic vessel
7. your most flexible cartilage
10. made up of a layer of spongy bone between two thin layers of compact bones
12. a passage, opening or communication between two cavities
14. the backbone
15. the small second segment of the leg of an insect
18. a small nodular lesion in the lungs or other tissues
19. a natural body opening or canal
20. depression commonly it refers to bones

1. a thin layer,membrane, or plate of tissue
2. A long narrow depression occuring naturally on the surface of an organusm
4. a large prominence on a bone usually serving for the attachment of muscles
8. a connective tissue in the skeletal system
9. a head is the part of an organism that usually includes the ears,brain, forehead, cheeks
11. theoretical lines drawn through anatomical structures
13. the shaft or central part of a long bone
16. A crest is any of various anatomical features appearing as a raised point or ridge
17. rope from muscle to bone