Across
- 1. Moves oxygen into the body and carbon dioxide out
- 3. Helps break down food with enzymes
- 6. Tiny blood vessels where exchange of substances occur
- 7. Tissue connecting muscles to bones
- 8. Tube that connects the throat to the stomach
- 10. Contracts to help the body move
- 12. The brain is part of this system
- 14. Protects the body from infection
- 15. Main organ of the digestive system
Down
- 2. Bones are part of this system
- 4. Organ that filters blood and produces urine
- 5. Where gas exchange occurs in the lungs
- 9. Carries oxygen through the bloodstream
- 11. System responsible for hormone production
- 13. Main organ of the circulatory system