2. Corpus callosum

3. Fornix

4. Thalamus

5. Pons

6. Cerebellum

7. Fourth ventricle

8. Medulla oblongata

9. Spinal cord

10. Thyroid cartilage

11. Larynx

12. Epiglottis

13. Hyoid bone

14. Vertebra

15. Soft palate

16. Pharyngeal tonsil

17. Eustachian tube

18.  Sphenoid sinus

19. Pituitary

20. Frontal sinus

21. Nasal conchae

22. External naris

23. Hard palate

24. Nasal cavity