Respiratory System
Across
- 3. infection in the lungs
- 4. main function of the respiratory system
- 5. smoking greatly increases your risk of getting this disease
- 6. filters the air that you breathe
- 8. they transport oxygen and carbon dioxide to and from the lungs
Down
- 1. contracts when you inhale, expands when you exhale
- 2. take in oxygen
- 4. widening or destruction of airways
- 6. inflammation of the tonsils
- 7. two tubes connecting the trachea and the lungs