Exploration of the meninges and brain in situ

Striate arteries, anterior commissure and optic nerve viewed from above and in front

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Image #2-6

Exploration of the meninges and brain in situ

Striate arteries, anterior commissure and optic nerve viewed from above and in front

More tissue has been cut away from the basal region of the left hemisphere. The anterior commissure (6) has been partly removed. The striate arteries and the recurrent branch of the anterior cerebral artery (17) are shown in their relation to the lentiform nucleus. The temporal pole has been removed from the middle cranial fossa.

1. Internal cerebral vein left
2. V. terminalis
3. Caudate nucleus (cut across)
4. Frontal part of internal capsule (cut across)
5. Fornix (column) left (cut across)
6. Anterior commissure
7. Septum pellucidum (note: septal vein)
8. Corpus callosum
9. Anterior cerebral artery right
10. Anterior cerebral artery left (cut across)
11. Orbital branch of anterior cerebral artery
12. Olfactory tract (cut across)
13. Hippocampus
14. Insula
15. Putamen
16. External division of globus pallidus
17. Internal division of globus pallidus and recurrent branch of anterior cerebral artery
18. Inferior cerebral vein
19. Middle cerebral artery
20. Lesser wing sphenoid bone (covered by dura mater and arachnoid)
21. Optic nerve (II)
22. Middle meningeal artery
23. Middle cerebral vein
24. Anterior cranial fossa