1
.
| Olfactory tract |
2
.
| Optic nerve (II) (elevated) |
3
.
| Ophthalmic artery and anterior clinoid process |
4
.
| Diaphragm of sella |
5
.
| Ophthalmic nerve (VI) |
6
.
| Trochlear nerve (IV) |
7
.
| Posterior communicating artery and oculomotor nerve (III) |
8
.
| Cavernous sinus |
9
.
| Tentorium cerebelli (cut away) |
10
.
| Semilunar ganglion (trigeminal) |
11
.
| Basilar venous plexus |
12
.
| Boundary between anterior and middle cranial fossae |
13
.
| Arachnoid matter (extending into optic canal) |
14
.
| Tuberculum sellae |
15
.
| Branch of internal carotid artery right to hypophysis |
16
.
| Hypophysis (visible through diaphragmatic foramen) |
17
.
| Infundibulum (cut across) |
18
.
| Oculomotor nerve entering cavernous sinus (note sac-like eversion of dura mater similar to Meckel's cave) |
19
.
| Posterior clinoid process |
20
.
| Dorsum sellae |
21
.
| Orifice in margin of tentorium cerebelli to accommodate trochlear nerve (IV) |