About The Medical Condition Root, Spinal Nerve
Find the definition of the medical term Root, Spinal Nerve. Root, Spinal Nerve defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Root, Spinal Nerve
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What's The Definition Of The Medical Condition Root, Spinal Nerve?
The paired bundles of nerve fibers entering and leaving the spinal cord at each segment. The dorsal and ventral nerve roots join to form the mixed segmental spinal nerves. The dorsal roots are generally afferent, formed by the central projections of the spinal (dorsal root) ganglia sensory cells, and the ventral roots efferent, comprising the axons of spinal motor and autonomic preganglionic neurons. There are, however, some exceptions to this afferent/efferent rule.
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