Mesencephalon 3, cross section
| Term name | Layer | |
|---|---|---|
| 1 | Pineal gland | Layer 1 |
| 2 | Substantia nigra | Layer 1 |
| 3 | Periaqueductal grey substance; central grey substance | Layer 1 |
| 4 | Superior colliculus | Layer 1 |
| 5 | Aqueduct of midbrain; cerebral aqueduct [[Sylvii]] | Layer 1 |
| 6 | Medial lemniscus | Layer 1 |
| 7 | Cerebral peduncle | Layer 1 |
| 8 | Medial geniculate body | Layer 1 |
| 9 | Brachium of superior colliculus | Layer 1 |
| 10 | Medial longitudinal fasciculus | Layer 1 |
| 11 | Lateral spinothalamic tract | Layer 1 |
| 12 | Central tegmental tract | Layer 1 |
| 13 | Nucleus albus | Layer 1 |