Diencephalon, sagittal section
| Term name | Layer | |
|---|---|---|
| 1 | Habenular commissure | Layer 1 |
| 2 | Habenular trigone | Layer 1 |
| 3 | Septum pellucidum | Layer 1 |
| 4 | Posterior commissure | Layer 1 |
| 5 | Posterior commissure | Layer 2 |
| 6 | Interthalamic adhesion; massa intermedia | Layer 1 |
| 7 | Fornix | Layer 1 |
| 8 | Preoptic area | Layer 1 |
| 9 | Subcallosal area; subcallosal gyrus | Layer 1 |
| 10 | Lamina terminalis | Layer 1 |
| 11 | Rostrum | Layer 1 |
| 12 | Genu | Layer 1 |
| 13 | Truncus | Layer 1 |
| 14 | Splenium | Layer 1 |
| 15 | Corpus callosum | Layer 1 |
| 16 | Mammillary body | Layer 1 |
| 17 | Tuber cinereum | Layer 1 |
| 18 | Infundibulum | Layer 1 |
| 19 | Optic chiasm; optic chiasma | Layer 1 |
| 20 | Anterior commissure | Layer 1 |
| 21 | Anterior commissure | Layer 2 |
| 22 | Thalamus; dorsal thalamus | Layer 1 |
| 23 | Hypothalamus | Layer 1 |
| 24 | Infundibular recess | Layer 2 |
| 25 | Supra-optic recess | Layer 2 |
| 26 | Interventricular foramen | Layer 2 |
| 27 | Taenia thalami | Layer 2 |
| 28 | Aqueduct of midbrain; cerebral aqueduct [[Sylvii]] | Layer 2 |
| 29 | Third ventricle | Layer 2 |