one of two departments of the ANS, the other being the SNS. Structurally, it consist of the part of the ANS whose preganglionic fibers leave the CNS from the brainstem through the glossopharyngeal, facial, occulomotor, and vagus nerves and the spinal cord through three sacral nerves. Commonly referred to as parasympathetic division, parasympatholytic drugs see anticholinergic drugs.
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