cldwl02| a | petrous pyramid |
| a1 | arceate eminence of pyramid |
| a2 | internal auditory canal & meatus |
| b | medial wall, orbit |
| c | superior wall, orbit |
| d | anterolateral wall ("friendly line") |
| e | zygomatic recess, antrum |
| f | ethmoid sinuses |
| g | planum sphenoidale |
| h | innominate line |
| i | lesser sphenoidal wing |
| j | crista galli |
| k | coronoid process, mandible |
| l | ascending ramus, mandible |
| m | medial wall, antrum |
| n | nasal septum |
| o | hard palate |
| p | maxillary alveolar process |