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Noun
1. dorsal root; posterior rootAnatomy
Wikipedia definition
2. Posterior root of spinal nerveIn anatomy and neurology, the dorsal root (or posterior root) is the afferent sensory root of a spinal nerve. At the distal end of the dorsal root is the dorsal root ganglion, which contains the neuron cell bodies of the nerve fibres conveyed by the root. If the dorsal root of a spinal nerve were severed it would lead to numbness in certain areas of the body. The lateral division of the dorsal root contains lightly myelinated and unmyelinated axons of small diameter.
Read “Posterior root of spinal nerve” on English Wikipedia
Read “後根” on Japanese Wikipedia
Read “Posterior root of spinal nerve” on DBpedia

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