nucleus of solitary tract

(redirected from nucleus tractus solitarii)

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] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Potts, "Role of GABAergic neurones in the nucleus tractus solitarii in modulation of cardiovascular activity," Experimental Physiology, vol.
Machado, "Neurotransmission of the cardiovascular reflexes in the nucleus tractus solitarii of awake rats," Annals of the New York Academy of Sciences, vol.
Involvement of oxytocin in the nucleus tractus solitarii on central cardiovascular control: interactions with glutamate.
Hsiao et al., "Adenosine modulates cardiovascular functions through activation of extracellular signal-regulated kinases 1 and 2 and endothelial nitric oxide synthase in the nucleus tractus solitarii of rats," Circulation, vol.
Endothelial NO synthase activity in nucleus tractus solitarii contributes to hypertension in spontaneously hypertensive rats.
According to an assumption, it is thought that a vagal reflex which is named vagocervical or esophagocervical reflex and the center of which is the nucleus tractus solitarii is responsible of the clinical findings (10).
Nucleus tractus solitarii: Afferent and efferent neuronal connections in relation to the baroreceptor reflex arc.
Cholinergic receptors are present in three medullary nuclei, the nucleus tractus solitarii (NTS), nucleus ambiguous (AMB) and the dorsal motor nucleus of the vagus nerve (DMV), which have been involved in the baroreceptor reflex activation that induce bradycardia.
Medullary visceral reflex circuits: local afferents to nucleus tractus solitarii synthesize catecholamines and project to thoracic spinal cord.
Campagnole-Santos, "Modulation of the baroreflex control of heart rate by angiotensin-(1-7) at the nucleus tractus solitarii of normotensive and spontaneously hypertensive rats," Journal of Hypertension, vol.
In the Nucleus Tractus Solitarii (NTS), a sensory nucleus in the caudal medulla that receives primary afferent visceroceptive inputs, but also afferent fibers from various brain regions, volume fraction of astrocytic processes and the density of astrocyte membranes are rather high, equal to 15% and 2.8 [micro][m.sup.2]/[micro][m.sup.3], respectively.

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