Across
- 5. appropriate song for this chapter by The Weeknd
- 6. pop singer who tells us to "just keep breathin"
- 10. "throat"; part of both respiratory and digestive system
- 13. form most of CO2 travels from cells to lungs
- 14. lung with one more lobe
- 15. amount of air exchanged in normal breath
Down
- 1. flap that covers glottis when swallowing
- 2. exchange of O2 and CO2 in the lungs
- 3. "voice box"
- 4. windpipe
- 7. maximum amount of air exchanged in lungs
- 8. prime mover of breathing
- 9. air sacs of lungs
- 11. membrane found on surface of lung
- 12. active phase of breathing