Hepatobiliary system - liver histology - anatomical and functional lobule - blood bile flow скачать в хорошем качестве

Hepatobiliary system - liver histology - anatomical and functional lobule - blood bile flow

#Hepatobiliarysystem #liverhistology #bloodbileflow #anatomical and functional lobule buy model online at :- https://skfb.ly/6S6WE https://www.cgtrader.com/products/liv... http://cbr.sh/znwev6 https://3dexport.com/3dmodel-liver-lo... https://www.turbosquid.com/FullPrevie... https://www.medical3dmodels.com do watch my other channel for other videos...https://bit.ly/3Yg3p08 This a model of hepatic lobule depicting the structure of the blood vessels and bile duct along with the flow of fluid within a lobule. Hepatobiliary system, liver histology, blood bile flow, liver anatomy , hepatic trabeculae, capsule of Glisson, Sinusoids, Portal triad, central vein, bile duct, hepatic artery, portal vein, Liver acinus, fibrous trabeculae, anatomy, histology The liver is the largest internal organ of the human body, weighing approximately 1.5 kg. consists of four lobes: two larger ones (right and left) and two smaller ones (quadrate and caudate). microscopically it consists of anatomical and functional lobuleswith the following major histological components: Parenchyma, which is represented by hepatocytes Stroma, which is a continuation of the surrounding capsule of Glisson. It consists of connective tissue and contains the vessels. Sinusoids, which are capillaries travelling between hepatocytes Spaces of Disse (perisinusoidal spaces), which are located between the hepatocytes and the sinusoids. Structure In histological terms, the liver consists of a large number of microscopic functional units that work in unison to ensure the overall, proper activity of the entire organ. There are three possible ways of describing one such unit, as given below: Hepatic (classic) lobule Portal lobule Liver acinus Hepatic (classic) or anatomical lobule It consists of hexagonal plates of hepatocytes stacked on top of each other. Within each plate, the hepatocytes radiate outwards from a central vein. One portal canal is located at each corner of the hexagonal classic lobule, making a total of six for each lobule. These portal canals are composed of the portal triads, which are surrounded by loose stromal connective tissue While connective tissue is present around the portal canals, the interlobular quantity is very small in humans. This can make routine histological visualizations of the classic lobule difficult. Portal or functional lobule each functional unit is a triangle, having a central axis through a portal field and the imaginary vertices through the three different but closest portal canals surrounding it. The area covered by the triangle represents the hepatic regions that secrete bile into the same bile duct. Liver acinus The focus of this description is the perfusion, metabolism and pathology of hepatocytes. A liver acinus unit is in the shape of an oval. The short axis is represented by a shared border between two adjacent lobules together with the portal canals. The long axis is an imaginary line between two adjacent central veins. Hepatocytes These large and polyhedral (six surfaces) cells make up 80% of the total cells of the liver. They can contain between two and four nuclei, which are large and spherical, occupying the centre of the cells. Perisinusoidal space (space of Disse) This space is situated between the layers of hepatocytes and the sinusoidal endothelial cells. The hepatocytes extend villi into the perisinusoidal space, increasing the extent and rate of material exchange, together with the microvilli.