digestive 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.

di·ges·tive tract

the passage leading from the mouth to the anus through the pharynx, esophagus, stomach, and intestine.

digestive tract

n.
The mucous membrane-lined tube of the digestive system through which food passes, in which digestion takes place, and from which wastes are eliminated. It extends from the mouth to the anus and includes the pharynx, esophagus, stomach, and intestines.

di·ges·tive tract

(di-jes'tiv trakt)
The passage leading from the mouth to the anus through the pharynx, esophagus, stomach, and intestine.
Synonym(s): alimentary canal, alimentary tract.

Digestive tract

The organs that perform digestion, or changing of food into a form that can be absorbed by the body. They are the esophagus, stomach, small intestine, and large instestine.

di·ges·tive tract

(di-jes'tiv trakt)
Passage from mouth to anus through pharynx, esophagus, stomach, and intestine.
Synonym(s): alimentary tract.
References in periodicals archive ?
In otolaryngology practice, aspirated or ingested foreign bodies in the upper digestive tract often present as an emergency.
In the bacterial communities of the digestive tract of fish dominating facultative bacteria are: Vibrio, Aeromonas, Enterobacteriaceae (Ringo, Birkbeck 1999; Al-Harbi, Uddin 2004).
(1.) Ganguly S, Prasad A (2012) Microflora in fish digestive tract plays significant role in digestion and metabolism: a Review.
pappaterra and the disproportion with the intestine length, the present study aimed to locate, describe and characterize the regions of the digestive tract from this species, using histological techniques.
The digestive tract is a dynamic system that changes throughout the year as the diet varies with seasonal change in forage availability (Weckerly 1989, Cork and Foley 1991, Pehrson et al.
In-Fisherman Staff Fishery Scientist Steve Quinn--Adult trematodes inhabit the digestive tracts of fish-eating birds like herons and kingfishers.
Summary: TEHRAN (FNA)- Infants are more efficient at digesting and utilizing nutritional components of milk than adults due to a difference in the strains of bacteria that dominate their digestive tracts.
Studies regarding feeding in fishes from tropical regions usually reported diet composition and feeding periodicity (PEREIRA et al., 1982; WINEMILLER, 1987; BARBIERI et al., 1994; KIRKAGAC, 2003), but for interpretation of feeding habits, is also important to analyze morphometric parameters of the digestive tract. The gastrointestinal tract shows a high variability in structure according to diet (BUDDINGTON et al., 1987).
It's the contents of a middle-aged man's lower digestive tract.
Insoluble fiber--another type of fiber--speeds up the passage of material through the digestive tract, thus lowering the risk of colon cancer and other digestive tract disorders.
In their study, published in a recent issue of the Journal of Pediatrics, researchers said it is likely that the roots of colic can be traced to bacteria in the baby's stomach and digestive tract that causes pain and results in the baby ceaselessly crying.
By far the most prevalent feline digestive tract disorder, says Dr.