book lung

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  • noun

Words related to book lung

organ in many arachnids containing many thin folds of membrane resembling the leaves of a book

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The book lungs of Scorpiones and Tetrapulmonata (Chelicerata, Arachnida): Evidence for homology and a single terrestrialisation event of a common arachnid ancestor.
Keywords: Oxygen consumption, book lungs, mygalomorph spider
The book lungs are two paired organs located within the abdomen of spiders in an inextensible chitinous cavity called the atrium (Foelix 1996).
The thickened, spirally arranged reinforcements (T) that adjoin the heart chamber and its surrounding musculature also are slightly stained, possibly due to strongly acidic groups of their constituent glucosamine polymers, as is also evident in the thin walls that delimit air pockets in the book lungs (Fig.
The structure of the book lung (BL) in the abdomen of a lycosid spider is shown in Fig.