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pleural cavity

pleural cavity
Also known as the pleural sac or pleural space, a body cavity that surrounds the lung in humans and other mammals. It is separated from the rest of the perivisceral cavity by the diaphragm. There is a pair of pleural cavities separated from each other by the mediastinum and the pericardial cavity. The actual space of the pleural cavity is normally filled with a thin layer of fluid between the pleura of the lungs and the body wall, which are almost in contact.

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