Across
- 1. mechanical and chemical digestion
- 3. electrical signals
- 7. carry oxygenated blood
- 8. for protection
- 9. top chambers of heart
- 10. system for movement
- 13. stores urine
Down
- 2. balanced environment
- 4. nerves for voluntary movement
- 5. muscles that connect to bones
- 6. brain and spinal cord
- 11. for balance
- 12. stretched ligament