Nervous system

Definition of Nervous system

(Anat.) the specialized coördinating apparatus which endows animals with sensation and volition. In vertebrates it is often divided into three systems: the central, brain and spinal cord; the peripheral, cranial and spinal nerves; and the sympathetic. See Brain, Nerve, Spinal cord, under Spinal, and Sympathetic system, under Sympathetic, and Illust. in Appendix.

See also: Nervous

Related Words

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, neuron, peripheral nervous system, plexus, sensorium, sensory area, sensory cell, solar plexus, spinal cord, synapse, thoracolumbar nervous system, white matter
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-Nervous system-
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