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what is the main nerve of the parasympathetic nervous system what is the major nerve of the parasympathetic nervous system what is the longest nerve of the autonomic nervous system the vagus nerve is the main nerve of the parasympathetic nervous system cranial nerve that is the main nerve of the parasympathetic nervous system what is the name of the cranial nerve that is the main nerve of the parasympathetic nervous system what nerves are in the parasympathetic what is the structure of the parasympathetic nervous system is the vagus nerve part of the parasympathetic nervous system
