portal circulation


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Related to portal circulation: hepatic portal circulation

portal circulation

[′pȯrd·əl ‚sər·kyə′lā·shən]
(physiology)
The passage of venous blood through a portal system.
References in periodicals archive ?
Orally delivered insulin is also expected to have distinct advantages over alternative delivery options, because it is delivered directly to the portal circulation and then to the liver, which is consistent with normal physiology.
Orally administered estrogens or other steroids are delivered directly into the portal circulation via gut absorption, Dr Liu reminded the audience.
Pioneering studies by Garret Fitzgerald at the University of Pennsylvania and other scientists in the 80's have shown that a controlled release formulation of Aspirin at the correct release rate will result in sustained specific irreversible acetylation of platelets as they pass through the portal circulation.