8/14/2019 Spinal Cord Basics

1/2

Spinal Cord BasicsTanya Warwick, M.D.

Ascending:

Dorsal Column light touch, vibration, proprioception, tactile discriminationCrosses medulla (internal arcuate fibers) to medial lemniscus and VPL

Receives fibers from pacinian corpuscles, Meissners, joint receptors, muscle

spindles, and golgi tendon organs.Spinothalamic Tract pain and temperature (from free nerve endings, Adelta and C fibers)

Descending:

Corticospinal Tract 80% lateral 20% ventral / medial

1. Fasciculus gracilis - LE

2. Fasciculus cuneatus - UE

3. Tractus spinocerebellaris dorsalis

4. Tractus corticospinalis lateralis

5. Tractus spinothalamicus lateralis

6. Tractus spinocerebellaris ventralis

7. Tractus rubrospinalis

8. Tractus spinotectalis

9. Tractus corticospinalis anterior

10. Tractus olivospinalis

11. Tractus spinoolivaris12. Tractus tectospinalis

13. Tractus reticulospinalis

14. Tractus vestibulospinalis

15. Tractus spinothalamicus anterior

8/14/2019 Spinal Cord Basics

2/2