afferent neuron, autonomic nervous system, axon, brain, central nervous system, cerebral cortex, craniosacral nervous system, dendrite, effector organ, efferent neuron, ganglion, gray matter, internuncial neuron, medullary sheath, nerve, nerve trunk, nervous system, neuron, peripheral nervous system, plexus, sensorium, sensory area, sensory cell, spinal cord, synapse, thoracolumbar nervous system, white matter