Medical Definition of Spinal nerve roots

1. The paired bundles of nerve fibres 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. (12 Dec 1998)



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Lexicographical Neighbors of Spinal Nerve Roots

spinal fractures
spinal fusion
spinal ganglion
spinal headache
spinal induction
spinal injuries
spinal lemniscus
spinal length
spinal marrow
spinal muscle
spinal muscle of head
spinal muscle of neck
spinal muscle of thorax
spinal muscular atrophy
spinal nerve
spinal nerve roots (current term)
spinal nerves
spinal nucleus of the trigeminus
spinal osteophytosis
spinal paralysis
spinal part of accessory nerve
spinal part of arachnoid
spinal point
spinal puncture
spinal quotient
spinal reflex
spinal root of accessory nerve
spinal shock
spinal sign

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