dorsal root

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dorsal root

n.
Either of the two roots of a spinal nerve, consisting of sensory fibers and arising from the posterior section of the spinal cord.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.dorsal root - one of the two roots of a spinal nerve that passes dorsally to the spinal cord and that consists of sensory fibers
afferent, afferent nerve, sensory nerve - a nerve that passes impulses from receptors toward or to the central nervous system
nervus spinalis, spinal nerve - any of the 31 pairs of nerves emerging from each side of the spinal cord (each attached to the cord by two roots: ventral and dorsal)
References in periodicals archive ?
There is also an abrupt wedge-shaped terminus of the cord, which lies opposite T12 and an abnormal course of the cauda equina with separation of the anterior and posterior nerve roots, forming the "double bundle shape.
In addition, the surgery to implant the electrodes includes, when the patient agrees, cutting some of the fibers of the sacral posterior nerve roots.

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