port all (portal)

[ portal vein, hepatic artery, and hepatic duct. Portal circulation, the pa age of venous blood from the capil laries of one organ to those of another before reaching the heart. There are two such circulations, through the liver and through the kidneys, distinguished as hep a to portal and ren i portal. Only the former occurs in man, whence the specific use of the phrase in reference to this only. In this form of portal circulation, the venous blood from the cap illaries of the stomach, spleen, and intestine or chylopoietic viscera collectively is gathered by the gastric, splenic, and mesenteric veins into a common venous channel, the vena portæ or portal vein, which conducts it into the liver. See ren i portal, and cuts under embryo and liver. - Portal See fi ure . - Portal system, the portal vein with its tributaries and its distributing branches. With a dose of cleansing calomel Unload the portal system (that sounds well!). O. W. Holmes, Rip Van Winkle, M. D. Portal vein, a large, short trunk receiving the blood from the chylopoietic viscera, formed from the union of the splenic and superior mesenteric veins. It enters the transverse fi ure of the liver, where it divides into a right and a left branch, which again subdivide to be distributed to the substance of the liver. Also called vena portæ or portarum. portatile (põr'ta-til), a. [= Sp. portátil Pg. portatil, Cro Portate.