Across
- 3. small air sacs in your lungs
- 6. the air passage between the nose and the lungs
- 8. most people breathe through this
- 11. these carry oxygen and give your blood its color
- 14. what the blood becomes after blood releases oxygen to the cells of the body
- 15. the smallest blood vessels
- 17. to breathe in
- 18. these thick-walled blood vessels carry oxygenated blood to the cells in your body
- 19. ____ blood travels from the lungs to the heart
- 20. in the ____, oxygen enters the blood and carbon dioxide leaves it
- 21. the blood vessels that carry deoxygenated blood to the heart
Down
- 1. if your nose is stuffed up, you can still breathe through this
- 2. the side of the heart that pushes deoxygenated blood to your lungs
- 4. the side of the heart that pushes oxygenated blood to all parts of the body
- 5. cells produce this chemical waste
- 7. the organ with two muscled powered pumps that work side by side
- 9. an important gas the body needs
- 10. in blood keep you from bleeding too much
- 12. these cells fight disease
- 13. capillaries run very close to every ____ in the body
- 16. the liquid part of the blood