Across
- 3. carry oxygen and nutrients in your body
- 7. main organ of the respiratory system
- 9. system that gives your body structure
- 11. contract and relax
- 12. organ that absorbs water
- 13. system that pumps blood through your body
Down
- 1. system that work with the skeletal system
- 2. connect your bones to muscles
- 4. the main organ of the nervous system
- 5. system that breaks down your food
- 6. connect your bones to bones
- 8. system that controls your body
- 10. the system that exchanges oxygen for CO2