Medicine & USMLE

Dorsal Motor Nucleus

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Vagal Nuclei
  1. Nucleus Ambiguus
  2. Nucleus Tractus Solitarius
  3. Dorsal Motor Nucleus

Dorsal Motor Nucleus

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Summary

The dorsal motor nucleus is a cranial nerve nucleus where parasympathetic or “rest and digest” nervous impulses controlling our internal organs like the heart, lung and upper GI tract originate. These nerve fibers are carried through the Vagus nerve, or cranial nerve 10.

Key Points

  • Dorsal Motor Nucleus
    • Cranial nerve nucleus
    • Function
      • Sends parasympathetic autonomic fibers to heart, lungs, upper GI tract
    • Nerve fibers carried by
      • Vagal Nerve (CN X)