| a | maxillary antrum, fluid filled |
| b | medial wall |
| c | posterolateral wall |
| d | zygomatic arch |
| e | molar eminence |
| f | medial plate of pterygoid bone |
| g | lateral plate of pterygoid bone |
| h | volmer bone (nasal septum) |
| i | mandibular condyle |
| j | glenoid fossa |
| k | rt. styloid process |
| L | clivus |
| m | internal occipital protuberance |
| n | mastoid air cells (also see, sklat11) |
| o | external auditory canal (also see, sklat08) |
| p | jugular foramen |
| q | petro-occipital suture |