Dissection of nasal fossae, nasal pharynx, and palate

Relations of nasal passages, maxillary sinus, palate and sphenopalatine ganglion, left lateral view

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Image #71-5

Dissection of nasal fossae, nasal pharynx, and palate

Relations of nasal passages, maxillary sinus, palate and sphenopalatine ganglion, left lateral view

The zygomatic bone has been completely removed and the lateral bony walls of the maxillary sinus (20) and inferior nasal meatus (21) have been cut away. The sinus is unusually small. The connections of the sphenopalatine ganglion (17) have been dissected.

1. Tendon of lateral rectus muscle
2. Inferior oblique muscle
3. Infraorbital nerve and artery within infraorbital canal (note branch of artery to inferior oblique muscle)
4. Middle nasal concha
5. Mucosa of nasal septum
6. Infraorbital margin
7. Inferior nasal concha (anterior tip resected)
8. Hard palate
9. Anterior nasal spine maxillae
10. Muscles of upper lip (sectioned in midline)
11. Alveolar process of maxilla (edentulous)
12. Levator palpebrae superioris muscle and superior rectus muscle
13. Sheath of optic nerve
14. Ophthalmic nerve (V)
15. Inferior rectus muscle
16. Upper pointer: Sphenoid sinus (cut open) Lower pointer: Vidian nerve of pterygoid canal (bony canal opened)
17. Sphenopalatine ganglion
18. Terminal portion of internal maxillary artery (cut off)
19. Superior posterior alveolar nerve
20. Mucosal membrane maxillary sinus
21. Superior posterior alveolar artery and mucosal membrane inferior nasal meatus
22. Branches of anterior palatine nerve
23. Greater palatine artery
24. Remnant of lateral plate of pterygoid process
25. Tunica palatine mucosa
26. Tongue