| 1
.
| Upper pointer: Medial wall of orbit Lower pointer: Anterior ethmoidal foramen |
| 2
.
| Bony roof of ethmoidal cell |
| 3
.
| Olfactory bulb (visible through window in ethmoidal air cell) |
| 4
.
| Olfactory nerve (I) (enclosed in fibrous sheaths; upper pointer indicates filaments which pass to left lateral wall, lower pointer those which pass to right side of septum) |
| 5
.
| Margin of septal cartilage |
| 6
.
| Mucosal membrane septi (attached surface) |
| 7
.
| Nasopalatine nerve left (cut away centrally) |
| 8
.
| Terminal branches of nasopalatine nerve and sphenopalatine artery (posterior septal artery) entering incisive canal |
| 9
.
| Incisive canal |
| 10
.
| Anterior palatine nerve emerging from greater palatine foramen |
| 11
.
| Ostium of parotid duct |
| 12
.
| Optic nerve (II) (cut off in optic canal) |
| 13
.
| Internal carotid artery (retracted posteriorly) |
| 14
.
| Hypophysis |
| 15
.
| Sphenoid sinus |
| 16
.
| Rostrum of sphenoid |
| 17
.
| Posterior nasal septal arteries right |
| 18
.
| Nasopalatine nerve right |
| 19
.
| Pharyngeal tonsil |
| 20
.
| Nasal septum |
| 21
.
| Upper pointer: Torus tubarius Lower pointer: Pharyngeal recess |
| 22
.
| Posterior palatine nerve |
| 23
.
| Middle palatine nerve |
| 24
.
| Soft palate (pointer on fibers of uvular muscle) |
| 25
.
| Pharyngopalatine muscle (in palatopharyngeal arch) |
| 26
.
| Upper pointer: Palatine tonsil Lower pointer: Glossopalatine muscle (in palatoglossal arch) |
