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Which is the correct hierarchy?

1) ANS, sympathetic, PNS
2) PNS, sympathetic, ANS
3) Sympathetic, ANS, PNS

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User ZXX
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1 Answer

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The autonomic nervous system is divided into three parts: the sympathetic nervous system, the parasympathetic nervous system and the enteric nervous system. The autonomic nervous system controls smooth muscle of the viscera (internal organs) and glands.
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User Coda
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