gastrointestinal tract


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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.

gas·tro·in·tes·ti·nal tract

(G.I. tract) the stomach, small intestine, and large intestine; often used as a synonym of digestive tract.

gastrointestinal tract

gas·tro·in·tes·ti·nal tract

(gastrō-in-testi-năl trakt)
Stomach, small intestine, and large intestine; often used to mean digestive tract.

gastrointestinal tract

See ALIMENTARY CANAL.

Gastrointestinal tract

The entire length of the digestive system, running from the stomach, through the small intestine, large intestine, and out the rectum and anus.

gastrointestinal

pertaining to the stomach and intestine.

gastrointestinal foreign body
see intestinal obstruction.
gastrointestinal hormones
hormones secreted by the gastrointestinal epithelium that affect the function of the tract itself and of its allied organs, e.g. gastrin, glucagon, enteroglucagon, somatostatin, secretin, cholecystokinin-pancreozymin, motilin, gastric inhibitory polypeptide, vasoactive intestinal polypeptide.
gastrointestinal series
a radiological examination of the upper gastrointestinal tract using barium as the contrast medium for a series of x-ray films. Called also a barium meal. See barium study.
gastrointestinal tract
the stomach and intestines in continuity. See also digestive system.
References in periodicals archive ?
Surgical resection for melanoma metastatic to the gastrointestinal tract.
This regimen disables their immune system and gastrointestinal tract for several weeks and leaves them susceptible to many complications, including endotoxemia and infections.
It is therefore anticipated to ameliorate hyperphosphatemia by reducing the absorption of phosphorus from the gastrointestinal tract.
ProQuin XR complements our existing product line and we look forward to offering patients this once-daily product, which is a powerful antibiotic, yet gentle on the gastrointestinal tract.
Atiprimod is a drug that we know from tissue distribution studies accumulates at highest concentrations in liver and the gastrointestinal tract," noted Dr.
Intravenous infusion for the treatment of patients with gastrointestinal tract and urinary dysfunction that commonly occurs after major abdominal and prolonged surgeries; and
Colonization and immunomodulation by Lactobacillus reuteri ATCC 55730 in the human gastrointestinal tract.
Upper endoscopy and colonoscopy allow us to see only the two extreme ends of the gastrointestinal tract.
The company's technologies are designed to increase drug residence time at target sites within the gastrointestinal tract, thereby improving bioavailability.
Depomed's Gastric Retention (GR)(TM) system is a patented, oral drug delivery technology designed specifically for drugs that are preferentially absorbed high in the gastrointestinal tract.
When the dots were injected into pigs' lungs and gastrointestinal tracts, they traveled to the sentinel nodes associated with those organs, and glowed strongly enough to be sensed with an infrared detector through intact skin.
So were bacteria that naturally reside on human skin and in people's mouths and gastrointestinal tracts.