- Biliary tract
The biliary tract (or biliary tree) is the common
anatomyterm for the path by which bileis secreted by the liveron its way to the duodenum, or small intestine, of most members of the mammalfamily. 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 is present along with the branches of the hepatic artery and the portal vein forming the central axis of the portal triad. Bile flows in opposite direction to that of the blood present in the other two channels.
liveris usually excluded, [MeshName|Biliary+tract] but sometimes included.cite web |url=http://www.mercksource.com/pp/us/cns/cns_hl_dorlands_split.jsp?pg=/ppdocs/us/common/dorlands/dorland/eight/000109910.htm |title=Dorlands Medical Dictionary:biliary tract |format= |work= |accessdate=]
Pressure inside in the biliary tree can give rise in
gall stoneand lead to cirrhosis of the liver.
Blockage can cause
jaundice.cite web |url=http://cancerweb.ncl.ac.uk/cgi-bin/omd?biliary+tract |title=Definition: biliary tract from Online Medical Dictionary |format= |work= |accessdate=]
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"
* [http://www.etsu.edu/cpah/hsci/forsman/BiliaryTreeComplete.htm Diagramm at etsu.edu]
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