Across
- 2. these carry oxygenated blood through the body
- 4. this system allows us to breath
- 9. group of organs
- 10. controls everything
- 11. this system has quick a reaction
- 13. this are a part of the respitory system
- 15. You couldn't turn food into energy without it
- 17. this is a barrier between external and internal environment
- 19. Without it you couldn't move
- 20. the basic unit of life
Down
- 1. these are blood vessels
- 3. balanced
- 5. group of tissues
- 6. the change in position of an object
- 7. a push or pull
- 8. this system carries oxygen through
- 12. group of organ systems
- 14. this system is a structure that helps us stand
- 16. the largest organ in the circulitory system
- 18. group of cells