Neuroscience: A Journey Through the Brain

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Nervous System Organization: Neural Systems

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The nervous system is responsible for the perception of external and internal conditions and the body's response to them. It has two major divisions: the central and peripheral nervous systems. The complexity of the nervous system makes it a challenge to study-millions of neurons may lie beneath a single square centimeter of brain surface, each synapsing with as many as 600 other neurons, and many different parts of the brain may be involved in a single task. The human nervous system is divided into several distinct systems (show illustration by clicking here). 
(From: Gale Encyclopedia of Psychology)

Created and Maintained by: Melissa Davies
Last Updated: March 23, 2002 09:27 AM