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the layer of flat cells, derived from the mesoderm, that lines the body cavity of the embryo. In the adult it forms the simple squamous epithelium that covers the surface of all true serous membranes (peritoneum, pericardium, pleura).
A single layer of flattened cells forming an epithelium that lines serous cavities; for example, peritoneum, pleura, pericardium.
[meso- + epithelium]
n. pl. mesothe·lia (-lē-ə)
The layer of flat cells of mesodermal origin that lines the embryonic body cavity and gives rise to the squamous cells of the peritoneum, pericardium, and pleura.
mes·o·the·li·um, pl. mesothelia (mez'ō-thē'lē-ŭm, -ă)
A single layer of flattened cells forming an epithelium that lines serous cavities; e.g., peritoneum, pleura, pericardium.
mesotheliumLining cells originating in the primitive MESODERM of the developing embryo. Mesothelium occurs in the PERITONEUM, PLEURA and PERICARDIUM as well as elsewhere in the body.
A membrane/sac that that protects the body's major internal organs and allows them freedom of movement (for example, lung contractions). The mesothelium is comprised of several regions, including the abdominal cavity (peritoneum), the chest cavity (pleura), and pericardium (heart).
Mentioned in: Mesothelioma