Noun | 1. | afferent nerve - a nerve that passes impulses from receptors toward or to the central nervous system dorsal horn, dorsal root - one of the two roots of a spinal nerve that passes dorsally to the spinal cord and that consists of sensory fibers afferent neuron, sensory neuron - a neuron conducting impulses inwards to the brain or spinal cord afferent fiber, sensory fiber - a nerve fiber that carries impulses toward the central nervous system |