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Insights into Epidermis and Intestinal Junctional Complex in Health

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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Insights into Epidermis and Intestinal Junctional Complex in Health

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  1. Skin epidermis dermis

  2. Skin -- Dermal-Epidermal Junction

  3. melanocytes Langerhans (antigen-presenting) cells

  4. Intestine “Striated Border” microvilli Apical surface epithelium Basal surface

  5. Cell -Cell Junctions

  6. Intestinal Junctional Complex MV = MicroVilli TJ = Tight Junction ZA = Zonula Adherens D = Desmosomes IF = Intermediate Filaments

  7. Hemidesmisome Joins basal surface of epithelium to basement membrane

  8. Gap Junction

  9. More Epithelium -- Liver parenchyma

  10. Hepatocytes and sinusoidal lining cells (Kupffer Cells and Endothelium) Portal triad

  11. Liver, Reticulin stain for Collagen

  12. Liver, Electron Microscopy

  13. Mesentery - Microcirculation Venule AV shunt capillary M= metateriole Arteriole

  14. Continuous endothelium Fenestrated endothelium

  15. Arterioles

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