Across
- 1. bone smooth outer layer
- 6. attached to bone
- 7. heart
- 8. can control
- 11. skeleton does not connect to spine
- 13. organs
- 14. body regulates itself
Down
- 2. organs work together
- 3. system
- 4. basic unit of life
- 5. skeleton connects to spine
- 9. holds bone to bones
- 10. holds muscles together
- 12. don't control
- 15. cells work together