Across
- 1. major air passages
- 3. a control to let blood flow one way
- 4. the air passage between the nose and the lungs
- 5. thick-walled blood vessels carry oxygenated blood to the cells in your body
- 8. transports needed substances through out your body and carries away waste
- 10. large curved muscle just below your lungs
- 15. a structure that carries blood to the rest of the body
- 17. your heart beat
- 18. oxygen enters the blood and carbon dioxide leaves it
- 20. help protect against disease
- 21. is a fist a organ in your chest
Down
- 2. things that put your heart at risk such as smoking
- 3. the camber under the atrium
- 6. a tissue made up of cells and cell parts
- 7. the chamber above the ventricle
- 9. gets rid of carbon dioxide
- 11. keep you from bleeding to much
- 12. these carry oxygen and give your blood its color
- 13. tiny air sacs that make up your lungs tissue
- 14. the smallest blood vessels
- 16. these blood vessels carry deoxygenated blood to the heart
- 19. the liquid of the body