PATHOLOGY

Detailed explanation-1: -Portal Vein and Hepatic Artery.

Detailed explanation-2: -The portal vein, which arises from umbilical and vitelline veins is the central vessel in which the hepatic cords form around. This helps explain why the portal vein is the primary blood supply for the liver as opposed to the hepatic artery.

Detailed explanation-3: -Central veins are located at the centers of liver lobules. The vicinity of a central vein (unlike a portal area) normally includes little or no connective tissue. Sinusoids open freely into the central vein. The central vein in turn provides a “drain” from the lobule into the hepatic vein, which leads to the vena cava.

Detailed explanation-4: -The liver receives a blood supply from two sources. The first is the hepatic artery which delivers oxygenated blood from the general circulation. The second is the hepatic portal vein delivering deoxygenated blood from the small intestine containing nutrients.