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book lung
book lung n. One of the paired saccular respiratory organs found in some arachnids, such as scorpions and spiders, consisting of several parallel membranous folds arranged like the pages in a book. book′ lung`
n. the respiratory organ of many arachnids, composed of thin, paperlike layers of tissue. [1895–1900] book lung (bo͝ok) The breathing organ of scorpions, spiders, and some other arachnids. It consists of membranes arranged in several parallel folds like the pages of a book.Thesaurus| Noun | 1. | book lung - organ in many arachnids containing many thin folds of membrane resembling the leaves of a bookrespiratory organ - any organ involved in the process of respiration |
book lung
book lung, terrestrial respiratory organ characteristic of arachnids such as scorpions and primitive spiders. Each book lung consists of hollow flat plates. Air bathes the outer surface of the plates and blood circulates within them, facilitating the exchange of gases. In most species, adequate gas exchange occurs without any muscular movement to ventilate the lung.book lung[′bu̇k ‚ləŋ] (invertebrate zoology) A saccular respiratory organ in many arachnids consisting of numerous membranous folds arranged like the pages of a book. book lung
book lungn. 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.book lung
Words related to book lungnoun organ in many arachnids containing many thin folds of membrane resembling the leaves of a bookRelated Words |