a major part of the central nervous system which conducts sensory and motor nerve impulses to and from the brain; a long tubelike structure extending from the base of the brain through the vertebral canal to the upper lumbar region
parte principal do sistema nervioso central que conduce os impulsos motores, sensoriais e nerviosos do cerebro. estrutura cilíndrica longa que se estende dende a base do cerebro a través do canal vertebral ata a rexión lumbar superior