Respiratory System
Across
- 2. area behind nose where air is warmed, filtered, and moistened
- 4. gas need for cellular respiration
- 8. voice box
- 11. waste product given off in the gas exchange between air and blood in the alveoli
- 12. to breathe out
- 13. the two branches at bottom of trachea
- 14. main respiratory organs that take in & release air
Down
- 1. made in all our cells using oxygen & food
- 3. tiny air sacs (there are 300 million in each lung)
- 5. prevents food from entering the trachea
- 6. aka windpipe
- 7. to breathe in
- 9. also known as the throat
- 10. strong flat muscle that pulls/pushes air in/out of lungs