American Heritage® Dictionary of the English Language, Fourth Edition
- n. The more posterior of the two nerve fiber bundles of a spinal nerve that carries sensory information to the central nervous system.
- n. one of the two roots of a spinal nerve that passes dorsally to the spinal cord and that consists of sensory fibers
“Every segment of the vertebral column has two big nerves sprouting from the spinal cord on either side, called the dorsal root and the ventral root.”
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