Across
- 1. the gross sticky stuff in our nose
- 8. what our lungs are made up of
- 9. The tube that connects our mouth to our lungs
- 10. what we breath in
- 11. Something that is BAD for your lungs
- 12. what lets oxygen travel through the body
Down
- 2. Something that is GOOD for your lungs
- 3. What the respiratory systems lets us do
- 4. the muscle that moves up and down to help expand our lungs
- 5. body part that is on our face with 2 nostrils and breathes in oxygen
- 6. the biggest part of the Respiratory System
- 7. what we breath out