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Portal System

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Definition: A system of vessels in which blood, after passing through one capillary bed, is conveyed through a second set of capillaries before it returns to the systemic circulation. It pertains especially to the hepatic portal system.  /radiogr: consider also PORTOGRAPHY   
See Also Liver Circulation; Portography
Examples Mesenteric Veins; Portal Vein; Splenic Vein; Umbilical Veins 		Other names Systems, Portal; System, Portal; Portal Systems

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
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