book lung

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book lung

n.
A saccular respiratory organ found in some arachnids, such as scorpions and spiders, consisting of several parallel membranous folds arranged like the pages in a book.
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In this study we hypothesized that Grammostola rosea Walckenaer 1837, an active predator of large size which depends entirely on its two paired book lungs, has a low energy strategy based on large respiratory surface area and a thin air-hemolymph barrier.
65 g) were sacrificed, and their book lungs were carefully extracted and immersed in 2.
1 resulted in coloration only in nuclei of the book lung and other somatic tissues adjacent to the testis, but the sperm remained unstained (Table 1, Fig.