Across
- 3. the area containing vocal cords
- 4. another word for windpipe
- 7. a flap of tissue in the back of your throat
- 8. tubes these let air in and out of your lungs
- 10. a hollow tube that starts behind the nose
- 11. organs on either side of the chest
- 12. a colorless gas we need to survive
Down
- 1. either of two openings of the nasal cavity
- 2. large air passage that goes to the windpipe to the lungs
- 5. dioxide a gas with a density of 53% higher then dry air
- 6. located below the lungs
- 7. a tube that goes from the throat to the stomach
- 9. tiny air sacs