Search results
por·tal sys·tem
/ˈpôrdl ˈsistim/noun
- 1. the system of blood vessels consisting of the portal vein with its tributaries and branches.
Powered by Oxford Dictionaries
Results from the Go Local Guru Content Network
The hypophyseal portal system is a system of blood vessels in the microcirculation at the base of the brain, connecting the hypothalamus with the anterior pituitary. Its main function is to quickly transport and exchange hormones between the hypothalamus arcuate nucleus and anterior pituitary gland. The capillaries in the portal system are ...
In human anatomy, the hepatic portal system or portal venous system is the system of veins comprising the portal vein and its tributaries. The other portal venous systems in the body are the renal portal system , and the hypophyseal portal system .
There are three portal systems, two venous: the hepatic portal system and the hypophyseal portal system; and one arterial (one capillary system between two arteries): the renal portal system. [1] Unqualified, portal venous system usually refers to the hepatic portal system.
Symptoms. Ascites [1] Causes. Splenic vein thrombosis, stenosis of portal vein [2] Diagnostic method. Ultrasonography [2] Treatment. Portosystemic shunts, Nonselective beta-blockers [2] Portal hypertension is defined as increased portal venous pressure, with a hepatic venous pressure gradient greater than 5 mmHg.
It is a major component of the hepatic portal system, one of three portal venous systems in the human body; the others being the hypophyseal and renal portal systems. The portal vein is usually formed by the confluence of the superior mesenteric, splenic veins, inferior mesenteric, left, right gastric veins and the pancreatic vein.
Porto-systemic anastomosis Portal caval system. A portacaval anastomosis or portocaval anastomosis is a specific type of circulatory anastomosis that occurs between the veins of the portal circulation and the vena cava, thus forming one of the principal types of portasystemic anastomosis or portosystemic anastomosis, as it connects the portal ...
A web portal is a website that provides a broad array of services, such as search engines, e-mail, online shopping, and forums. American web portals included Pathfinder , Excite , Netscape 's Net Center, Go , NBC , MSN , Lycos , Voila, Yahoo! , and Google Search .
Portal frame is a construction technique where vertical supports are connected to horizontal beams or trusses via fixed joints with designed-in moment -resisting capacity. [1] The result is wide spans and open floors. Portal frame structures can be constructed using a variety of materials and methods.
Schematic depicting an intranet. An intranet is a computer network for sharing information, easier communication, collaboration tools, operational systems, and other computing services within an organization, usually to the exclusion of access by outsiders. [1] The term is used in contrast to public networks, such as the Internet, but uses the ...
Portal venous system, an occurrence where one capillary bed drains into another through veins Hepatic portal system, the portal system between the digestive system and the liver Hepatic portal vein, a vein that drains blood from the digestive system; Hypophyseal portal system; See also. Conduit (channeling) The Portal (disambiguation)