Skeletal System Part 1

3. a dense membrane covering the outer surface of bones except at joints
4. the lower back region of the vertebral column, below the thoracic vertebrae
7. the upper jawbone that also forms part of the eye sockets and nasal cavity
12. a mature bone cell that maintains bone tissue
13. dense bone tissue that forms the outer layer of bones and provides strength
14. the portion of the skeleton that includes the limbs and the girdles
17. small cavities within bone matrix that house osteocytes

1. a bone-resorbing cell that breaks down bone tissue
2. the lattice-like network of bony spines in spongy bone
5. the lower jawbone; the largest and strongest bone of the face
6. the soft tissue inside bones where blood cells are produced or fat is stored
8. relating to the middle section of the vertebral column; connected to the ribs
9. a U-shaped bone in the neck that supports the tongue and is not attached to other bones
10. a large, triangular bone at the base of the spine, formed from fused vertebrae
11. a bone-forming cell responsible for building new bone matrix
14. the central part of the skeleton, including the skull, vertebral column, and rib cage
15. porous bone tissue found inside bones, containing spaces filled with marrow
16. the flat bone in the center of the chest to which ribs attach; also called the breastbone