Rubrospinal tract | |
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Details | |
Identifiers | |
Latin | tractus rubrospinalis |
NeuroLex ID | birnlex_1476 |
TA98 | A14.1.02.220 A14.1.04.136 A14.1.05.332 A14.1.06.213 |
TA2 | 6097 |
FMA | 73995 |
Anatomical terminology |
The rubrospinal tract is one of the descending tracts of the spinal cord. It is a motor control pathway that originates in the red nucleus.[1] It is a part of the lateral indirect extrapyramidal tract.
The rubrospinal tract fibers are efferent nerve fibers from the magnocellular part of the red nucleus. (Rubro-olivary fibers are efferents from the parvocelluar part of the red nucleus).[2]
It is functionally less important in humans.[3] It is involved in motor control of distal flexors of the upper limb - especially of the hand and fingers[4]- by promoting flexor tone while inhibiting extensors.[3]