dorsal nucleus of vagus nerve

(redirected from Dorsal motor nucleus)
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dor·sal nu·cle·us of va·gus nerve

(dōr'săl nū'klē-ŭs vā'gŭs nĕrv)
The visceral motor nucleus located in the vagal trigone (ala cinerea) of the floor of the fourth ventricle. It gives rise to the parasympathetic fibers of the vagus nerve innervating the heart muscle and the smooth musculature and glands of the respiratory and intestinal tracts.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
"Neuroactive substances in the dorsal vagal complex of the medulla oblongata: nucleus of the tractus solitarius, area postrema, and dorsal motor nucleus of the vagus." Neurochemistry International 7.1 (1985): 191-211.
The electrophysiologic study has shown that oxytocin is able to activate several neuronal population in different rat brain areas including the hypothalamic supraoptic nucleus, paraventricular nucleus, hippocampus and the dorsal motor nucleus of the vagus nerve [28].
Histopathologic lesions in brain of zebu with spongiform encephalopathy and cow with bovine spongiform encephalopathy, Switzerland, 2004 * Site Cow Zebu Brainstem Dorsal motor nucleus of vagus nerve (+) (++) Nucleus of spinal tract of trigeminal (++) (+++) nerve Nucleus of hypoglossal nerve (+) (++) Reticular formation (++) (++) Nucleus of solitary tract (++) (+++) Vestibular nuclei (++) (+) to (++) Olivary nuclei (++) (++) Cerebellar cortex (-) (+) Midbrain (substantia grisea centralis) (+) to (++) (++) to (+++) Thalamus (++) (++) to (+++) Hippocampus n.d.
Examination of the brains of these animals showed not only nigral cell loss with a corresponding striatal dopamine depletion but also neurodegeneration in the locus coeruleus, dorsal motor nucleus of the vagus, and the nucleus basalis of Meynert, a pattern of cell loss that is strikingly similar to that seen in Parkinson's disease and is not observed in any other of the toxicant-induced animal models of Parkinson's disease.
Most authors agree that the reduction of RRIV in PD is due to degeneration of the dorsal motor nucleus of the vagus nerve[16].
In patients with Parkinson's disease (PD), nonmotor symptoms such as hyposmia, mood disorders, sleep disorders, and autonomic abnormalities often precede motor symptoms, and [alpha]-synuclein deposition in the olfactory bulb, enteric plexus, or dorsal motor nucleus of the vagus nerves is considered to proceed to nigral degeneration [1].
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