1. Fig. 13 A. Dorsal spinocerebellar tract B. Cuneocerebellar tract
Convey information from muscle spindles and Golgi tendon organs (stretch and tension). Dorsal spinocerebellar from lower limb, cuneocerebellar from upper.
Terminates in spinocerebellum (anterior lobe & paramedian lobule)
Terminates somatotopically in spinocerebellum (anterior lobe and paramedian lobule
Enters cerebellum through inferior cerebellar peduncle
Enter cerebellum with the ipsilateral inferior cerebellar peduncle
Synapse with second order neuron in the lateral (external) cuneate nucleus
Dorsal (posterior) spinocerebellar tract ascends in dorsal part & lateral funiculus
Synapse with second order neuron in nucleus dorsalis (of Clarke)
First order sensory fibers from muscle spindles and GTOs (muscle stretch and tension) from upper limb enter the dorsal horn and ascend the cervical spinal cord with the fasciculus cuneatus
First order fiber ascends spinal cord in fasciculus gracilis to reach upper lumbar cord
Upper lumbar cord
Cervical cord
First order neuron in lumbo-sacral dorsal root ganglion
Fig. 13
Lower lumbar/sacral cord