1
.
| Frontal tuber |
2
.
| Supraorbital foramen |
3
.
| Frontal sinus |
4
.
| Fossa of lacrimal gland |
5
.
| Zygomatic process |
6
.
| Temporal line & temporal surface |
7
.
| Articular surface for greater wing sphenoid bone |
8
.
| Surface facing middle cranial fossa |
9
.
| Area which forms roof over ethmoidal cells |
10
.
| Posterior ethmoidal foramen |
11
.
| Ethmoidal incisure |
12
.
| Frontal bone (squamous part) |
13
.
| Parietal margin |
14
.
| Glabella |
15
.
| Nasal margin |
16
.
| Frontal spine |
17
.
| Area forming part of roof of nasal fossa |
18
.
| Canal opening into diploic space |
19
.
| Supraorbital margin |
20
.
| Trochlear pit |
21
.
| Anterior-ethmoidal foramen |
22
.
| Orbital surface |