| 1
.
| Upper pointer: Optic nerve (II) Lower pointer: Anterior clinoid process (covered by dura) |
| 2
.
| Internal carotid artery |
| 3
.
| Diaphragma sellae |
| 4
.
| Posterior communicating artery |
| 5
.
| Oculomotor nerve (III) |
| 6
.
| Location of sinus cavernosus (covered by dura) |
| 7
.
| Cerebral tentorium (reflected) |
| 8
.
| Trochlear nerve (IV) |
| 9
.
| Trigeminal nerve (V) (beneath arachnoid membrane) |
| 10
.
| Superior cerebellar vein |
| 11
.
| Branch of superior cerebellar artery |
| 12
.
| Right anterior cerebral artery |
| 13
.
| Anterior commissure |
| 14
.
| Upper pointer: Optic chiasm (cut across in midline) Lower pointer: Optic recess |
| 15
.
| Left pointer: Infundibulum Right pointer: Triangular recess |
| 16
.
| Infundibular recess |
| 17
.
| Mamillary body (cut across) |
| 18
.
| Cerebral peduncle |
| 19
.
| Third ventricle |
| 20
.
| Nucleus ruber |
| 21
.
| Arterial branch which entered brain stem through posterior perforated substance in interpeduncular fossa |
| 22
.
| Position of medial lemniscus |
| 23
.
| Brachium quadrigeminum inferius (cut across) |
| 24
.
| Superior colliculus |
| 25
.
| Left internal cerebral vein |
| *
.
| [Legend above restored translation from Latin] |
