Across
- 3. helps parts exit your body
- 4. once you eat food this happens
- 5. helps fight infection
- 7. heart and blood vesels
- 8. mouth, trachea and lungs
- 9. what pulls on bones
- 11. helps you reproduce
Down
- 1. brain, spinal cord, nerves
- 2. use your lungs to breathe, and use your nose
- 6. hormones
- 10. all of your bones