Dorsal nucleus of vagus nerve

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Brain: Posterior nucleus of vagus nerve
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Nuclei of origin of cranial motor nerves schematically represented; lateral view. ("X" visible at bottom center.)
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#9 is vagus nerve and nucleus
Latin nucleus posterior nervi vagi
NeuroNames hier-752
NeuroLex ID birnlex_2642

The dorsal nucleus of the vagus nerve (or posterior motor nucleus of vagus) is a cranial nerve nucleus for the vagus nerve in the medulla that lies under the floor of the fourth ventricle. It mostly serves parasympathetic vagal functions in the gastrointestinal tract, lungs, and other thoracic and abdominal vagal innervations. The cell bodies for the preganglionic parasympathetic vagal neurons that innervate the heart reside in the nucleus ambiguus.

Additional cell bodies are found in the nucleus ambiguus, which give rise to the branchial efferent motor fibers of the vagus nerve (CN X) terminating in the laryngeal, pharyngeal muscles, and musculus uvulae.

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