Vagus nerve
The vagus nerve, also known as the tenth cranial nerve, cranial nerve X, or simply CN X, is a cranial nerve that carries sensory fibers that create a pathway that interfaces with the parasympathetic control of the heart, lungs, and digestive tract. It comprises two nerves—the left and right vagus nerves—but they are typically referred to collectively as a single subsystem.
| Vagus nerve | |
|---|---|
Plan of the upper portions of the glossopharyngeal, vagus, and accessory nerves. | |
Course and distribution of the glossopharyngeal, vagus, and accessory nerves. | |
| Details | |
| Innervates | Levator veli palatini, Salpingopharyngeus, Palatoglossus, Palatopharyngeus, Superior pharyngeal constrictor, Middle pharyngeal constrictor, Inferior pharyngeal constrictor, viscera |
| Identifiers | |
| Latin | nervus vagus |
| MeSH | D014630 |
| NeuroNames | 702 |
| TA98 | A14.2.01.153 |
| TA2 | 6332 |
| FMA | 5731 |
| Anatomical terms of neuroanatomy | |
| Cranial nerves |
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The vagus is the longest nerve of the autonomic nervous system in the human body and comprises both sensory and motor fibers. The sensory fibers originate from neurons of the nodose ganglion, whereas the motor fibers come from neurons of the dorsal motor nucleus of the vagus and the nucleus ambiguus. The vagus was also historically called the pneumogastric nerve.
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