1. 2. right inferior lobe 3. thyrohyoid ligament 4. right middle lobe 5. horizontal fissure 6. right primary bronchus 7. cricoid cartilage B. \# thyroid cartilage 8. thyroid cartilage 9. 10. 11. 12. trachea 13. secondary bronchus (lobar) 14. tertiary bronchus (segmental) 15. left superior lobe/apex 16. diaphragm 17. \# left primary bronchus 18. left inferior lobe 19. larynx.