Respiratory anatomy

Across

4. two
7. apex
8. pleura
10. inspiration
12. alveoli
14. three
17. bifurcation
18. sacs

Down

1. base
2. lobe
3. ducts
5. carina
6. bronchus
9. bronchioles
11. thorax
13. expiration
15. diaphragm
16. hilum