dorsal root(redirected from Posterior roots)
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Either of the two roots of a spinal nerve, consisting of sensory fibers and arising from the posterior section of the spinal cord.
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|Noun||1.||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