Across
- 4. a system that provides structure and support
- 7. a group of tissues make
- 8. what your blood is in
- 10. the largest organ
- 12. a system that works the oxygen in your body
- 16. a system that works blood
- 17. the bones that protect your your lungs
- 18. a thing or event that causes reaction
- 19. the system that provides movement to the body
- 20. the most important organ of the nerves system
- 21. main organ of the circulatory system
Down
- 1. a group of cells make
- 2. the largest bone
- 3. a change in the position of a object
- 5. the system that removes waste
- 6. the system that breaks down food
- 9. a push or pull the changes the position of some thing
- 11. part of the nervous system used to smell
- 12. a system that produces offspring
- 13. balanced;unchanging
- 14. part of the respiratory system
- 15. protects your organs