Preganglionic nerve fibers of the parasympathetic nervous system arise from nuclei in which of the following cranial nerves? (Select all that apply.)

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Quizplus · Accepted Answer

Preganglionic fibers of the parasympathetic nervous system originate from the brainstem and sacral spinal cord. Specifically, they arise from nuclei associated with four cranial nerves: the oculomotor nerve (CN III), the facial nerve (CN VII), the glossopharyngeal nerve (CN IX), and the vagus nerve (CN X). The trigeminal nerve (CN V) is primarily involved in sensory functions and motor functions related to mastication, and does not contain parasympathetic fibers.

Preganglionic Nerve Fibers of the Parasympathetic Nervous System Arise from Nuclei