WordNet

a brief treatise on a subject of interest; published in the form of a booklet (同)pamphlet
an extended area of land (同)piece of land, piece of ground, parcel of land, parcel
a system of body parts that together serve some particular purpose
a drawing created by superimposing a semitransparent sheet of paper on the original image and copying on it the lines of the original image (同)trace
the act of drawing a plan or diagram or outline
the discovery and description of the course of development of something; "the tracing of genealogies"
relating to the bile ducts or the gallbladder

PrepTutorEJDIC

広大な土地(地域),(土地・海・空などの)広がり《+of+名》 / (器官の)管,(神経の)索
(おもに宗教・政治などの宣伝用の)小冊子,パンフレット
跡を追うこと,追跡;透写,複写 / 〈C〉 / 透写(複写)によってできたもの(地図・図案など),透写図

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/08/10 13:30:09」(JST)

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Digestive system diagram showing the common bile duct

The biliary tract (or biliary tree) is the common anatomical term for the path by which bile is secreted by the liver then transported to the first part of the small intestine, also known as the duodenum. A structure common to most members of the mammal family, it is referred to as a tree because it begins with many small branches which end in the common bile duct, sometimes referred to as the trunk of the biliary tree. The duct, the branches of the hepatic artery, and the portal vein form the central axis of the portal triad. Bile flows in the direction opposite to that of the blood present in the other two channels.

The name usually excludes the liver,^[1] but sometimes does include it.^[2]

Clinical significance[edit source | edit]

Pressure inside in the biliary tree can give rise to gallstones and lead to cirrhosis of the liver.

Blockage can cause jaundice.^[3]

The biliary tract can also serve as a reservoir for intestinal tract infections. Since the biliary tract is an internal organ, it has no somatic nerve supply, and colicky pain due to infection and inflammation of the biliary tract is not a somatic pain. Rather, pain may be caused by luminal distension, which causes stretching of the wall. This is the same mechanism that causes pain in bowel obstructions.^{[citation needed]}

Path[edit source | edit]

The path is as follows:

Bile canaliculi >> Canals of Hering >> bile ductules (in portal tracts) >> intrahepatic bile ducts >> left and right hepatic ducts >>
merge to form >> common hepatic duct >>
exits liver and joins >> cystic duct (from gall bladder) >>
forming >> common bile duct >> joins with >> pancreatic duct >>
forming >> ampulla of Vater >> enters duodenum

Pathology[edit source | edit]

An obstruction of the biliary tract can result in jaundice, a yellowing of the skin and whites of the eyes.

References[edit source | edit]

^ Biliary tract at the US National Library of Medicine Medical Subject Headings (MeSH)
^ "Dorlands Medical Dictionary:biliary tract".
^ "Definition: biliary tract from Online Medical Dictionary".

External links[edit source | edit]

Diagramm at etsu.edu

UpToDate Contents

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1. 総胆管損傷の修復 repair of common bile duct injuries
2. 急性胆管炎 acute cholangitis
3. 胆管癌の疫学、病因、および分類 epidemiology pathogenesis and classification of cholangiocarcinoma
4. 腹腔鏡下胆嚢摘出術の合併症の内視鏡マネージメント endoscopic management of complications from laparoscopic cholecystectomy
5. 腹腔鏡下胆嚢摘出術の合併症 complications of laparoscopic cholecystectomy

English Journal

Variants in motilin, somatostatin and their receptor genes and risk of biliary tract cancers and stones in Shanghai, China.

Xu HL1, Hsing AW2, Koshiol J3, Chu LW2, Cheng JR1, Gao J1, Tan YT1, Wang BS4, Shen MC5, Gao YT1.
Meta gene.Meta Gene.2014 Dec 1;2:418-426.
Altered motility of the gallbladder can result in gallstone and cholecystitis, which are important risk factor for biliary tract cancer. Motilin (MLN) and somatostatin (SST) are known important modulators of gallbladder motility. To determine whether genetic variants in motilin, somatostatin, and th
PMID 24999450

Understanding the reasons for the refusal of cholecystectomy in patients with cholelithiasis: how to help them in their decision?

Peron A1, Schliemann AL2, Almeida FA1.
Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery.Arq Bras Cir Dig.2014 Sep;27(2):114-9.
BACKGROUND: Cholelithiasis is prevalent surgical disease, with approximately 60,000 admissions per year in the Unified Health System in Brazil. Is often asymptomatic or oligosymptomatic and major complications arise from the migration of calculi to low biliary tract. Despite these complications are
PMID 25004289

Effects of thienorphine on contraction of the guinea pig sphincter of Oddi, choledochus and gall bladder.

Zhou P1, Li T2, Su R3, Gong Z4.
European journal of pharmacology.Eur J Pharmacol.2014 Aug 15;737:22-8. doi: 10.1016/j.ejphar.2014.04.044. Epub 2014 May 14.
Opioid analgesics are widely believed to cause spasm of the bile duct sphincter and so impede bile flow. Thienorphine is a partial opioid agonist that is a good candidate for the treatment of opioid dependence; however, to date, no studies have reported the effects of thienorphine on the function of
PMID 24830319