The Respiratory System
Across
- 2. inflating and deflating the lungs
- 4. chemical compound composed of one carbon and two oxygen atoms
- 7. the small air tubes that connect the bronchus to the alveoli
- 8. the pipe that sends air to the lungs
- 10. what you use to smell
- 11. where oxygen and nutrients are exchanged for carbon dioxide and waste
Down
- 1. occurs in liquids and gases when their particles collide randomly and spread out
- 3. what you use to breath
- 5. need it to breath
- 6. air sacs that exchange oxygen and carbon dioxide in the blood
- 7. is found at the end of the end of the end
- 9. protects organs