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A-Z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

pleura

pleu·ra

/ˈplo͝orə/

Noun

A double-layered membrane that surrounds the lungs. The parietal pleura lines the inside chest wall; the visceral pleura covers the organs such as the lungs. Under normal conditions there is no space between the two membranes; a watery liquid called serous fluid causes the pleura to “stick” together, yet slide around without effort.