2023年7月16日 · The hepatic circulation is a high-volume, low-pressure system – despite the liver receiving a large portion of cardiac output, the pressure of blood entering and leaving the liver is approximately 9mmHg and 1mmHg, respectively.

It functions to supply the liver with metabolites and ensures that ingested substances are processed in the liver before reaching the systemic circulation, limiting the damage ingested toxins may cause.

2023年10月30日 · The blood supply of the liver is delivered through the portal vein and the hepatic artery. The hepatic artery brings oxygenated blood to the hepatic tissues, while the portal vein collects the deoxygenated blood from the abdominal contents and filters it.

2022年8月25日 · Hepatic circulation is a unique system that has a double blood supply. It receives oxygenated blood from the hepatic artery and deoxygenated (oxygen deficit blood) blood from the portal vein.

The hepatic artery gives rise to peribiliary plexuses, to arterial branches of the interstitial portal tract tissue, to vessels of the hepatic capsule, as well as to the vasa vasorum of portal vein branches and of central, sublobular and large liver veins.

2020年8月15日 · The hepatic circulation has come up five times in the past papers (compared to four times for the cerebral circulation, making it 25% more important). Historical SAQs have included: In summary: Local endocrine signals (eg. VIP), causing vasodilation following a meal.

2014年1月1日 · The liver with its complex functions in biosynthesis, metabolism, clearance, and host defense plays a central role in the physiology of the human body. Hepatic homeostasis is tightly dependent on adequate perfusion and microcirculation. Hereby, the liver presents...

Hepatic circulation can be adjusted either by altering the lumen of the local vessels or by adjusting the rate of blood flow through them. The following factors regulate hepatic circulation: i. CO2 and H-Ion Concentration Changes, Metabolites, O2 Lack:

In severe liver disease, the whole body circulation is reorganized, by forming portacaval shunts, to accommodate the increased intrahepatic venous resistance. These shunts protect the venous drainage of the splanchnic organs but lead to loss of major regulatory roles of the liver.

2010年10月18日 · The hepatic circulation is fundamental to liver function, and the splanchnic circulation participates in the control of systemic hemodynamics as well as perfusion of the intestine.