portal circulation

portal circulation
blood flow in a portal system.

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Universalium. 2010.

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  • portal circulation — Physiol. blood flow in a portal system. [1870 75] * * * portal circulation, the part of the systemic circulation that carries blood from the stomach, pancreas, small intestine, and spleen to the liver …   Useful english dictionary

  • portal circulation — 1. the circulation of blood from the capillaries of one organ through larger vessels to the capillaries of another organ, before returning through larger veins back to the heart. 2. the passage of the blood from capillaries of the… …   Medical dictionary

  • portal circulation —    This is a type of circulatory bypass used when substances in blood or fluid need to be kept out of the general flow. A portal system begins in capillaries and ends in capillaries, and nothing leaves it undocumented. The hypothalamus sends… …   Herbal-medical glossary

  • hepatic portal circulation — portal c. (def. 2) …   Medical 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 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

  • hypophysial portal circulation — hypophysioportal circulation hypothalamo hypophysial portal system …   Medical dictionary

  • portal — 1. Relating to any porta or hilus, specifically to the porta hepatis and the p. vein. 2. The point of entry into the body of a pathogenic microorganism. SYN: port. [L. portalis, pertaining to a porta (gate)] …   Medical dictionary

  • portal — I. noun Etymology: Middle English, from Anglo French, from Medieval Latin portale city gate, porch, from neuter of portalis of a gate, from Latin porta gate more at port Date: 14th century 1. door, entrance; especially a grand or imposing one 2.… …   New Collegiate Dictionary

  • circulation — circulable /serr kyeuh leuh beuhl/, adj. /serr kyeuh lay sheuhn/, n. 1. an act or instance of circulating, moving in a circle or circuit, or flowing. 2. the continuous movement of blood through the heart and blood vessels, which is maintained… …   Universalium

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