Mesothelium

mesothelium /meso·the·li·um/ (-the´le-um) the layer of cells, derived from mesoderm, lining the body cavity of the embryo; in the adult, it forms the simple squamous epithelium that covers all true serous membranes (peritoneum, pericardium, pleura).mesothe´lial

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mes·o·the·li·um (mz-thl-m)

n. pl. mes·o·the·li·a (-l-)

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.

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meso·theli·al adj.

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Mesothelium

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

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mesothelium

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).