Across
- 2. contracts and flattens
- 4. prevents lungs from collapsing
- 6. removes waste products
- 7. transports food, liquid, and saliva
- 9. lower-anterior portion of chest
- 10. end of bronchioles
- 11. hilum of the left lung
- 16. transports air
- 17. inside the lungs
- 19. site for gas exchange
- 21. in the thoracic region
Down
- 1. transports deoxygenated blood
- 3. lines the inner surface of thoracic cavity
- 5. between the neck and the abdomen
- 8. acts as a protective shield
- 12. superior to the first rib
- 13. fights infection and disease
- 14. middle mediastinum of chest
- 15. seperating the right lobe from the middle lobe
- 18. stable pathway for respiration
- 20. removes carbon dioxide