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This informative document explores the structure and function of skin layers, the dermal-epidermal junction, and key cells like melanocytes and Langerhans cells. It also delves into the microvilli in the intestine and the various types of cell-cell junctions present, providing a detailed understanding of their roles in maintaining epithelial integrity and tissue function. Furthermore, it highlights the unique features of liver parenchyma and mesentery microcirculation through different types of endothelium and specialized cells.
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Skin epidermis dermis
melanocytes Langerhans (antigen-presenting) cells
Intestine “Striated Border” microvilli Apical surface epithelium Basal surface
Intestinal Junctional Complex MV = MicroVilli TJ = Tight Junction ZA = Zonula Adherens D = Desmosomes IF = Intermediate Filaments
Hemidesmisome Joins basal surface of epithelium to basement membrane
More Epithelium -- Liver parenchyma
Hepatocytes and sinusoidal lining cells (Kupffer Cells and Endothelium) Portal triad
Mesentery - Microcirculation Venule AV shunt capillary M= metateriole Arteriole
Continuous endothelium Fenestrated endothelium