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Line 1: − A system of sensitive cells that respond to stimuli such as sound, touch, and taste.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia+ − Educational Ministries, Inc. 1998</ref> + + − <references/>+ + + + +
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The '''nervous system''' is the set of [[neurons]] and support structures that process and organize information from the [[senses]] and bodily organs, analyze and coordinate appropriate responses and control the behavioral actions of an [[organism]]. All anatomical structures of the nervous system are made up of [[nervous tissue]].
The nervous system is present in some form in all chordates with the the simplest system represented in the [[flatworms]], which has two nerve cords running on opposite sides that connect to two simple [[brain|brains]] called [[ganglia]].
In the more complex [[vertebrates]] the nervous system is divided into two parts with the [[peripheral nervous system]] being defined as nervous tissue on the periphery of the body, basically everything other than the [[spinal cord]] and brain which are defined as part of the [[central nervous system]].
==References==
==References==
*Kandel, ER; Schwartz JH, Jessell TM (2000). Principles of Neural Science, 4th ed., New York: McGraw-Hill. ISBN 0-8385-7701-6.
*Martin, JH (2003). Neuroanatomy text and atlas 3rd ed., New York: McGraw-Hill.
* Sanes, Reh, Harris (2005). Development of the Nervous System, 2nd edition. Academic Press; ISBN 0-12-618621-9