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C
1. Pyramidal Tracts1a. Lateral corticospinal tract1b. Anterior corticospinal tract2. Extrapyramidal Tracts2a. Rubrospinal tract2b. Reticulospinal tract2c. Vestibulospinal tract2d. Olivospinal tractSomatotopy Abbreviations:S: Sacral, L: LumbarTh: Thoracic, C: Cervical
Motor and decending (efferent) pathways (left, red)
3. Dorsal Column Medial Lemniscus System3a. Gracile fasciculus3b. Cuneate fasciculus4. Spinocerebellar Tracts4a. Posterior spinocerebellar tract4b. Anterior spinocerebellar tract5. Anterolateral System5a. Lateral spinothalamic tract5b. Anterior spinothalamic tract6. Spino-olivary fibers
Sensory and ascending (afferent) pathways(right, blue)
S
L
Th
C
Th
L
S
C
Th
L
S
1a
1b
2a
2b
2c
2d
2b
3a
3b
4a
4b
5b
5a
6