Across
- 3. the gas needed for life
- 4. extends from the larynx to the bronchi
- 5. when we expel air
- 8. sacs where gas exchange occurs
- 9. tubes from the trachea to the lungs
- 11. two large sacs used to breathe
Down
- 1. small branches of bronchi
- 2. can be used to breathe and eat
- 6. when we take in air
- 7. muscle below lungs
- 10. better organ for breathing than a mouth
- 11. contains our vocal chords