Vein, portal
A large vein that carries blood from the stomach and the intestines to the liver. The portal vein is formed by the union of the splenic and superior mesenteric veins. It conveys venous blood to the liver for detoxification before the blood is returned to the circulation via the hepatic veins.

Medical dictionary. 2011.

Look at other dictionaries:

  • portal vein — noun a short vein that carries blood into the liver • Syn: ↑hepatic portal vein, ↑portal, ↑vena portae • Hypernyms: ↑vein, ↑vena, ↑venous blood vessel • Part Holonyms: ↑ …   Useful english dictionary

  • portal system — noun system of veins that carry blood from the abdominal organs to the liver • Hypernyms: ↑vascular system • Part Meronyms: ↑portal vein, ↑hepatic portal vein, ↑portal, ↑vena portae …   Useful english dictionary

  • portal system — n a system of veins that begins and ends in capillaries see HEPATIC PORTAL SYSTEM, PITUITARY PORTAL SYSTEM * * * a vein or group of veins that terminates at both ends in a capillary bed. The best known is the hepatic portal system, which consists …   Medical dictionary

  • Portal vein — can refer to: *the hepatic portal vein, a large vein that carries blood from the digestive tract to the liver and is formed by the splenic vein and superior mesenteric vein *a vein that is part of a portal venous system and connects two systems… …   Wikipedia

  • portal hypertension — n hypertension in the hepatic portal system caused by venous obstruction or occlusion that produces splenomegaly and ascites in its later stages * * * a state in which the pressure within the hepatic portal vein is increased, causing enlargement… …   Medical dictionary

  • Portal hypertensive gastropathy — Classification and external resources Image of portal hypertensive gastropathy seen on endoscopy of the stomach. The normally smooth mucosa of the stomach has developed a mosaic like appearance, that resembles snake skin …   Wikipedia

  • Portal — primarily refers to: * Portal (architecture), a gate, door, or tunnel. * Portal (fiction), a magical or technological doorway that connects two distant locationsPortal may also refer to:Computing* Enterprise portal, a framework to provide a… …   Wikipedia

  • Portal vein thrombosis — is a form of venous thrombosis affecting the hepatic portal vein, which can lead to portal hypertension and reduction in the blood supply to the liver.CausesCauses can include pancreatitis, cirrhosis, diverticulitis, and… …   Wikipedia

  • Portal venous pressure — is the blood pressure in the portal vein. It is normally 5 10 mm Hg [ [http://www.emedicine.com/med/byname/esophageal varices.htm eMedicine Esophageal Varices : Article Excerpt by: Samy A Azer ...] ] .An elevated pressure may cause portal… …   Wikipedia

  • Portal — Por tal, a. (Anat.) Of or pertaining to a porta, especially the porta of the liver; as, the portal vein, which enters the liver at the porta, and divides into capillaries after the manner of an artery. [1913 Webster] Note: Portal is applied to… …   The Collaborative International Dictionary of English

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