nucleus of solitary tract

nu·cle·us of sol·i·tar·y tract

(nū'klē-ŭs sol'i-tar-ē trakt)
A slender cell column extending sagittally through the dorsal part of the medulla oblongata, beneath the floor of the rhomboid fossa, immediately lateral to the limiting sulcus. It is the visceral sensory (visceral afferent) nucleus of the brainstem, receiving the afferent fibers of the vagus, glossopharyngeal, and facial nerves by way of the solitary tract. The caudal two thirds of the nucleus processes impulses originating in the pharynx, larynx, intestinal and respiratory tracts, and heart and large blood vessels; its rostral one third receives impulses from the taste buds and is known as the rhombencephalic gustatory nucleus.
Synonym(s): nucleus tractus solitarii [TA] .
References in periodicals archive ?
responses in the nucleus of solitary tract in the rat.
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.

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