| Medical Definition: |
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. |
| Guide Notes: |
/surg: consider also RHIZOTOMY; DORSAL ROOT GANGLIA is see GANGLIA, SPINAL; inflammation = RADICULITIS (single root) or POLYRADICULITIS (several roots) or POLYRADICULONEURITIS (nerve roots & peripheral nerves); do not use vertebra headings to locate area |
| Also Called: |
Dorsal Roots,Ventral Roots |
| Previously Indexed: |
Spinal Nerves (1966-1969) |
CANADIAN
MEDICAL GUIDE