Across
- 3. carries air to and from your lungs
- 5. where the oxygen enters the respiratory system
- 6. hin layer of tissue that protects the lungs
- 8. exchanges the oxygen and carbon dioxide
- 9. separates the chest cavity from the abdominal cavity.
- 10. holds the vocal cords
Down
- 1. alternating airflow
- 2. smaller and carries air to and from your lungs
- 4. rimary passageway to the lungs
- 7. passageway for air to enter the lungs