The endothelium forms an interface between circulating blood or lymph in the lumen and the rest of the vessel wall. pericardium, pleura, peritoneum ENDOTHELIUM & MESOTHELIUM ARE DIFFERENT THAN OTHER EPITHELIAL TISSUE BECAUSE? Endothelium and Mesothelium are specialized epithelial cell layers that line certain internal surfaces. Épithélium VS Mésothélium. It is a type of specialized epithelium that composes simple squamous epithelial cells. The basal membrane of the epithelium has keratin fibers associated, and endothelium has elastin fiber associated basal membrane. Mesothelium is also composed of simple squamous epithelial cells which line the thoracic cavity, abdominal cavity, and the heart sac. birds eye view of the cell borders. Moreover, another difference between epithelium and endothelium is that the epithelium may have single cell layer or many cell layers. These provide the functions of protection from mechanical physiological and microbial damage, secretary function of enzymes, hormones and lubricating fluids by the glandular epithelium and sensory function through the nerve endings. it is present in any histological slide. Endothelium lines the circulatory system while the mesothelium lines the major body cavities. ... Topic 1 - Simple squamous epithelium (mesothelium) Simple squamous epithelium (mesothelium) AgNO3. It lines whole external surface of the skin, internal cavities and lumens as well as the external and internal surfaces of the vessels. Structurally, mesothelium and endothelium are specialized or modified epithelial layers with mesodermal origin. It is composed of flattened cells adhered to a basal membrane with elastin fibers running through it. Hence, this is a functional difference between endothelium and mesothelium. In what ways does connective tissue differ from epithelial tissue? The mesothelium and the endothelium both come from the mesoderm, and pathologists do not consider mesothelium or endothelium to be true epithelium. Side by Side Comparison – Endothelium vs Mesothelium in Tabular Form 4. Terms of Use and Privacy Policy: Legal. Available here, 1.”Endotelijalna ćelija”By DRosenbach at English Wikipedia, (CC BY-SA 3.0) via Commons Wikimedia   By this definition, the endothelium is a type of epithelium. The endothelium is a specialized type of epithilium found in the lining of blood and lymphatic vessels. However, endothelium lines the internal surfaces of the blood vessels, lymph vessels and the heart. Endothelium vs. Epithelium. Sixteen MPMs exhibited BAP1 loss (16/25, 64%), while BAP1 was retained in all benign mesothelium and all OSTs. 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