At the Level of Superior Colliculus

1. Cerebral aqueduct
2. Commissure of superior colliculus
3. Stratum album profundum of superior colliculus
4. Stratum griseum profundum of superior colliculus
5. Stratum album intermediale of superior colliculus
6. Stratum griseum intermediale of superior colliculus
7. Stratum opticum of superior colliculus
8. Stratum cinereum of superior colliculus
9. Stratum zonale of superior colliculus
10. Periaqueductal gray
11. Midbrain tegmentum
12. Spinal lemniscus
13. Brachium of superior colliculus
14. Medial geniculate body

15. Medial lemniscus
16. Central tegmental tract
17. Medial longitudinal fasciculus
18. Oculomotor nucleus
19. Dorsal tegmental decussation
20. Red nucleus
21. Dentatorubrothalamic tracts, capsule of red nucleus
22. Substantia nigra
23. Parietotemporooccipitopontine tracts
24. Corticospinal and corticobulbar tracts
25. Frontopontine tract
26. Posterior cerebral arteries
27. Mamillary body

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