肝细胞构成肝脏细胞总数的80％,是肝脏正常功能活动的物质基础。肝细胞内代谢活跃,从血流中摄取经肠道消化吸收的物质,合成血浆蛋白的大部份,合成凝血因子、糖元、脂肪酸、胆固醇、磷脂等,并贮存糖元、蛋白质、脂类和维生素,以供机体需要;肝细胞同时还代谢外源性和内源性物质,如药物、毒物、胆红素、激素等;并制造和分泌胆汁参与消化过程。肝细胞为大的多边形细胞,排列成板状,细胞表面除彼此相邻外,大部份与血窦相邻。血窦壁被以扁平内皮细胞和具有吞噬能力的枯否氏细胞,把肝细胞与血窦分开,二者之间的空隙称为狄氏腔(也称窦周腔)。窦壁外侧有贮脂细胞(fat-storing cell),其突起支持窦壁,窦壁外还有一些网状纤维。内皮细胞扩展很薄,仅在细胞核处较厚,扫描电子显微镜观察到血窦内皮有很多大小不 Liver cells constitute 80% of the total number of liver cells, is the material basis of normal liver function. Active metabolism of liver cells, from the bloodstream uptake of intestinal digestion and absorption of substances, most of the synthesis of plasma proteins, synthesis of blood coagulation factors, glycogen, fatty acids, cholesterol, phospholipids, and storage of glycogen, protein, lipid And vitamins for the body’s needs; liver cells also metabolize exogenous and endogenous substances, such as drugs, poisons, bilirubin, hormones; and manufacturing and secretion of bile involved in the digestive process. Hepatic cells are large polygonal cells, arranged in a plate-like shape, the cell surface adjacent to each other, most adjacent to the blood sinus. The sinus wall is flattened with endothelial cells and phagocytosis of Kupffer cells, the liver cells separated from the sinusoids, the gap between the two known as the digestive cavity (also known as sinus cavity). There is a fat-storing cell on the outside of the sinus wall, with its protrusions supporting the sinus wall and some reticular fibers outside the sinus wall. Endothelial cell expansion is very thin, thicker only in the nucleus, and there are many sizes of sinusoid endothelial cells observed by scanning electron microscopy