Across
- 1. set of muscles found between the ribs
- 3. Warms and moistens the nasal cavity
- 11. The process of moving air into the lungs
- 13. Air passages from the trachea to lungs
- 14. The part above the mouth used to breathe
- 15. Microscopic air sacs
- 18. Breathing out
- 19. A colorless odorless reactive gas
- 20. skeletal structure that forms the chest
Down
- 2. The main organs that help you breathe
- 4. Gas produced by burning carbon
- 5. 4-5 inch long tube that carries air
- 6. The process of organisms taking in air
- 7. Helps get O2 into the lungs
- 8. O2 in the air is exchanged for CO2
- 9. Region at the back of the nose and mouth
- 10. Breathing in
- 12. dome-shaped muscle below the rib cage
- 16. sends air to lungs and holds vocal chord
- 17. Part that helps you breathe and eat food