Skeletal System
Across
- 2. the outer layer
- 4. structures that can contract and stretch
- 9. connect muscle to bone and allows the muscle to pull on the bone
- 10. one muscle contracts the other muscle relaxe
- 12. where two bones meet
- 13. for movement
Down
- 1. keeps the bones of the joint from moving too far apart
- 3. the spongy tissue in certain bones
- 5. a lubricant for bone ends, allowing them to slide over each other
- 6. for protection
- 7. smooth material covering the ends of bones moving against each other
- 8. a hard structure that protects the internal organs of a living thing
- 11. the inner bone