1 — Palatine bone, perpendicular plate; 2 — Pterygoid process, medial plate; 3 — Maxillary hiatus; 4 — Middle nasal concha; 5 — Sphenoid; Sphenoidal bone; 6 — Sphenopalatine foramen; 7 — Sphenoidal sinus; 8 — Hypophysial fossa; 9 — Superior nasal concha; 10 — Cribriform plate; 11 — Anterior cranial fossa; 12 — Frontal sinus; 13 — Crista galli; 14 — Frontal bone; 15 — Ethmoidal bulla; 16 — Uncinate process; 17 — Lacrimal bone; 18 — Frontal process; 19 — Inferior nasal concha; 20 — Palatine process; 21 — Oral cavity; 22 — Maxillary sinus; 23 — Ethmoidal cells; 24 — Orbit; 25 — Nasal cavity; 26 — Nasal septum
