ext_town02| a | neck of mandible |
| b | superimposed coronoid process and ascending ramus of mandible |
| c | zygomatic arch |
| d | base, greater wing of sphenoid |
| e | sphenomaxillary fissure |
| f | posterolateral wall, maxillary antrum |
| g | anterolateral wall, maxillary antrum |
| h | nasal septum |