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The Autonomic Nervous System controls internal organs, and is divided
into two subsystems, the Sympathetic Nervous System and the
Parasympathetic Nervous System. These two control the same organs except
that they are the reverse of each other, needed for homeostasis
(ensuring a stable internal environment to provide an organism with a
certain degree of independence from variations in external environments,
like maintaining a constant body temperature). The motor neurons of the Autonomic Nervous System are not connected to their targets but are instead connected to other motor neurons that link them to their targets. |
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[©Martin and Ambrose 2001] |
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