tractus


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tract

 [trakt]
a longitudinal assemblage of tissues or organs, especially a number of anatomic structures arranged in series and serving a common function, such as the gastrointestinal or urinary tract; also used in reference to a bundle (or fasciculus) of nerve fibers having a common origin, function, and termination within the central nervous system.
alimentary tract alimentary canal.
biliary tract the organs, ducts, and other structures that participate in secretion (the liver), storage (the gallbladder), and delivery (hepatic and bile ducts) of bile into the duodenum. See illustration.
Anatomy of the gallbladder and biliary tract. From Aspinall and Taylor-Robinson, 2002.
corticospinal t's two groups of nerve fibers (the anterior and lateral corticospinal tracts) that originate in the cerebral cortex and run through the spinal cord.
digestive tract alimentary canal.
dorsolateral tract a group of nerve fibers in the lateral funiculus of the spinal cord dorsal to the posterior column.
extrapyramidal tract extrapyramidal system.
gastrointestinal tract the stomach and intestine in continuity; see also digestive system.
iliotibial tract a thickened longitudinal band of fascia lata extending from the tensor muscle downward to the lateral condyle of the tibia.
intestinal tract see intestinal tract.
optic tract the nerve tract proceeding backward from the optic chiasm, around the cerebral peduncle, and dividing into a lateral and medial root, which end in the superior colliculus and lateral geniculate body, respectively.
pyramidal t's collections of motor nerve fibers arising in the brain and passing down through the spinal cord to motor cells in the anterior horns.
respiratory tract respiratory system.
urinary tract the organs and passageways concerned in the production and excretion of urine from the kidneys to the urinary meatus; see also urinary system.
uveal tract the vascular tunic of the eye, comprising the choroid, ciliary body, and iris.

tract

(trakt), [TA] Do not confuse this word with track.
1. An elongated area; a passage or pathway.
See also: fascicle. Synonym(s): tractus [TA]
2. An abnormal passage (for example, a fistula or sinus communicating with an abscess cavity).
[L. tractus, a drawing out]

tractus

/trac·tus/ (trak´tus) pl. trac´tus   [L.] tract.

tract

(trakt) [TA]
An elongated area, e.g., path, track, way.
See also: fascicle
Synonym(s): tractus.
[L. tractus, a drawing out]

tractus

pl. tractus [L.] tract; certain collections of nerve fibers in the central nervous system.
References in periodicals archive ?
Didicit enim Alamannos a pago Vadomarii exorsos, unde nihil post ictum foedus sperabatur incommodum, vastare confinis Raetiis tractus, nihilque sinere intemptatum manus, praedatorias fusius discurrentes [.
Evidence for a sympathoexcitatory pathway from the nucleus tractus solitarii to the ventrolateral medullary pressor area.
The volume includes an appendix on the 'substance argument,' and an index of passages in the Tractus as well as a general subject index.
Almost invariably, these symbols coincide with a tractus in the original source (rendered by Cosart as a short stroke at the top of the staff), and therefore a single figure (such as a regular barline) could represent them, rather than the two signs used here.
33, 6); (infatti, poveraccio, et occisus est per scrutarios et per plateas tractus et sordidissime per cloacas ductus et in Tiberim submissus est Hist.
Words from the Latin tractus have to do with being pulled or dragged.
beta]-Endorphin is generated from the precursor pro-opiomelanocortin (POMC), which is synthesized in the anterior pituitary (and in the intermediate lobe of the pituitary in rodents), as well as in neurons of the arcuate nucleus of the hypothalamus and in the nucleus tractus solitarius (see figure 3).
has an own interpretation of the humeral origin of the radial head of the DDF muscle, stating that it is a fibrous epicondylar tractus (in original a fibrous epitrochlear tractus) and incorrectly stating that the SDF has a strong attachment to the accessory carpal bone.
5) En la biblioteca del Colegio San Francisco Javier de Merida aparece resenado el libro de Esteban de Avila De Censuris Ecclesiasticis Tractus.
This punishment and miserable state the church today begins to represent dismissing all joyful songs like the Alleluia and Gloria in excelsis and replaces the tractus with lengthy chants, labored and mournful.
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.