Across
- 3. the lungs and the blood exchange oxygen
- 4. Brething in
- 6. you Breath from
- 8. net passive movement of molecules
- 9. The mussel that is responsibl for the lungs
- 11. smallest and biggest of the blood vessels
- 12. It is the organ that collects the air
Down
- 1. what you breath
- 2. A wind pipe
- 5. small air tubes
- 7. It is found at the end of the trachea
- 10. Protects the chest chavy