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va·gus nerve [CN X][TA]
a mixed nerve that arises by numerous small roots from the side of the medulla oblongata through the retroolivary groove, between the glossopharyngeal above and the accessory below; it leaves the cranial cavity by the jugular foramen and passes down to supply the pharynx, larynx, trachea, lungs, heart, and gastrointestinal tract as far as the left colic (splenic) flexure.
vagus/va·gus/ (va´gus) pl. va´gi [L.] the vagus nerve.
n. pl. va·gi (-gī, -jī)
The vagus nerve.
the tenth cranial nerve. For vagus nerve, see Table 14.
of cattle is the result of damage to branches of the vagus nerve which supply the rumenoreticulum, or to tension receptors in the wall of the reticulum. The two identified malfunctions are pyloric achalasia and reticulo-omasal achalasia (omasal transport failure). The clinical picture includes distention of the rumen or abomasum causing visible distention of the abdomen, emaciation and the passage of small amounts of pasty feces. Ruminal motility may be increased or decreased.
vagus nerve signs
dysfunction manifested by paralysis of pharynx, larynx, causing dysphagia, regurgitation through the nose, dyspnea, hypomotility of gastrointestinal tract.
any of four nuclei within the medulla oblongata; comprises the dorsal nucleus, the nucleus ambiguus, the nucleus of the tractus solitarius and the spinal nucleus of the trigeminal nerve.