Thoracic Segment of Spinal Cord

1. Arachnoid membrane
2. Subarachnoid space
3. Dorsal median sulcus
4. Dorsal median septum
5. Gracile fasciculus
6. Cuneate fasciculus
7. Dorsolateral sulcus
8. Dorsal root
9. Dorsolateral tract of Lissauer
10. Dorsal marginal nucleus (Lamina I)
11. Substantia gelatinosa (Lamina II)
12. Nucleus proprius (Lamina III, IV)
13. Nucleus dorsalis of Clarke
14. Intermediolateral nucleus and lateral horn
15. Medial motor nuclei (Lamina IX)
16. Lateral motor nuclei
17. Central canal with central gray matter

18. Lateral corticospinal tract
19. Dorsal spinocerebellar tract
20. Ventral spinocerebellar tract
21. Lateral spinothalamic tract
22. Ventral spinothalamic tract
23. Ventral corticospinal tract
24. Medial longitudinal meniuscus
25. Ventral root
26. Ventral lateral sulcus
27. Ventral median fissure
28. Tectospinal tract
29. Pontine reticulospinal tract
30. Medullary reticulospinal tract
31. Vestibulospinal tract
32. Vestibulospinal tract Rubrospinal tract
33. Spinospinal trat (fasciculus proprius)

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