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 ?
Differences in bacterial average abundance at the order level for the sheep gastrointestinal tract sections are shown as a heatmap in Figure 3 (n = 5 sheep).
Surgical resection for melanoma metastatic to the gastrointestinal tract.
Some saponins, taken orally, combine with cholesterol in the gastrointestinal tract, making cholesterol unavailable for absorption," says Balandrin.
It is designed to reverse certain peripheral side effects caused by opioids, particularly in the gastrointestinal tract, while not interfering with brain-centered pain relief.
These tumors can also appear in the gastrointestinal tract and in the skin in both sexes.
Because Cowden's disease is associated with carcinomas of the breast, thyroid, uterus, ovary, lung, skin, and gastrointestinal tract, a thorough initial systemic workup and close long-term observation of all these regions is indicated.
Bezoars, or stomach stones, are clumps of fruit and vegetable matter, drugs, hair, carpet fibers or other substances that can accumulate in the gastrointestinal tract.
EUDRACOL(TM) is a proprietary multi-layer colonic drug delivery system that is designed to provide drug protection in the upper gastrointestinal tract and controlled drug release in the ileum and colon.
The Phase I clinical trial was conducted in healthy volunteers to evaluate specific pharmacokinetic and absorption behavior of the drug compound once it is in the gastrointestinal tract.
Infants undergoing open heart surgery are at risk for endotoxin leakage from the gastrointestinal tract into the blood stream ("endotoxemia") due to their underlying heart disease and cardiac bypass during surgery.
NASDAQ:EZEM) today announced the launch of the CO(2)EFFICIENT(TM) Endoscopic Insufflator, a new device for insufflating the upper and lower gastrointestinal tract with carbon dioxide (CO(2)) gas.
It is therefore anticipated to ameliorate hyperphosphatemia by reducing the absorption of phosphorus from the gastrointestinal tract.