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 are efferent, comprising the axons of spinal motor and PREGANGLIONIC AUTONOMIC FIBERS.

Descriptor ID	D013126
MeSH Number(s)	A08.800.800.720.725
Concept/Terms	Spinal Nerve Roots Spinal Nerve Roots Nerve Root, Spinal Nerve Roots, Spinal Root, Spinal Nerve Roots, Spinal Nerve Spinal Nerve Root Spinal Roots Root, Spinal Roots, Spinal Spinal Root Ventral Roots Ventral Roots Root, Ventral Roots, Ventral Ventral Root Dorsal Roots Dorsal Roots Dorsal Root Root, Dorsal Roots, Dorsal

Below are MeSH descriptors whose meaning is more general than "Spinal Nerve Roots".

Below are MeSH descriptors whose meaning is related to "Spinal Nerve Roots".

Below are MeSH descriptors whose meaning is more specific than "Spinal Nerve Roots".