The Respiratory System
Across
- 2. Poisonous.
- 4. Pair of breathing organs located in the chest.
- 6. Infectious and inflammatory lung disease.
- 9. Disease often caused by smoking.
- 10. Another name for the windpipe.
- 11. Airway between the throat and the lungs.
- 12. Good air.
Down
- 1. To breathe air out.
- 3. Disease often caused by an allergy.
- 5. Organ of the human respiratory system that air enters.
- 7. Process in which our cells use oxygen and sugar to produce energy.
- 8. To breathe air in.