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In histology (microscopic anatomy), the lobules of liver, or hepatic lobules, are small divisions of the liver defined at the microscopic scale. The hepatic lobule is a building block of the liver tissue , consisting of a portal triad, hepatocytes arranged in linear cords between a capillary network, and a central vein .
The quadrate lobe is an area of the liver situated on the undersurface of the medial segment left lobe (Couinaud segment IVb), bounded in front by the anterior margin of the liver, behind by the porta hepatis, on the right by the fossa for the gall-bladder, and on the left by the fossa for the umbilical vein.
A liver segment is one of eight segments of the liver as described in the widely used Couinaud classification (named after Claude Couinaud) in the anatomy of the liver.This system divides the lobes of the liver into eight segments based on a transverse plane through the bifurcation of the main portal vein, [1] arranged in a clockwise manner starting from the caudate lobe.
English: Diagram of liver, blood vessels, hepatic lobule, ... Diagram of liver, blood vessels, hepatic lobule, and portal tract anatomy with key labels
The liver, viewed from below, surface showing four lobes and the impressions. The liver is grossly divided into two parts when viewed from above – a right and a left lobe – and four parts when viewed from below (left, right, caudate, and quadrate lobes). [16] The falciform ligament makes a superficial division of the liver into a left and ...
In microanatomy, the central vein of liver (or central venule) [1] is a vein at the center of each hepatic lobule. [2] It receives the blood mixed in the liver sinusoids to drain it into hepatic veins .
It is formed by the union of the right hepatic duct (which drains bile from the right functional lobe of the liver) and the left hepatic duct (which drains bile from the left functional lobe of the liver). [3] The duct is about 3 cm long. [4] The common hepatic duct is about 6 mm in diameter in adults, with some variation. [5]
The bare area of the liver is found on the posterosuperior surface of the right lobe of the liver. [1] This lies close to the thoracic diaphragm. It is the only part of the liver that has no peritoneal covering. [1] [2] It lies between the two layers of the coronary ligament, as well as the right triangular ligament. [1]