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Like spiders they were terrestrial and respired through book lungs and walked on eight legs respiration takes place through the body surface and or by means of gills tracheae or book lungs a researcher at the university of manchester has reported finding slit like structures and book lungs on some eurypterid fossils.
Book lungs definition zoology. Air bathes the outer surface of the plates and blood circulates within them facilitating the exchange of gases. Each book lung consists of hollow flat plates. A book lung is a type of respiration organ used for atmospheric gas exchange that is present in many arachnids such as scorpions and spiders each of these organs is located inside an open ventral abdominal air filled cavity atrium and connects with the surroundings through a small opening for the purpose of respiration.
Blood is passed over a large surface area to absorb oxygen. Air bathes the outer surface of the plates and blood circulates within them facilitating the exchange of gases. Primitive lungs of many arachnids consisting of pagelike layers of tissue over which.
They are located in the abdomen just below the pedicel and are composed of many fine leaves. A book lung is a type of respiration organ used for atmospheric gas exchange and is found in arachnids such as scorpions and spiders each of these organs is found inside a ventral abdominal cavity and connects with the surroundings through a small opening. Book lung terrestrial respiratory organ characteristic of arachnids such as scorpions and primitive spiders.
Book lungs are not related to the lungs of modern land dwelling vertebrates their name describes their structure. The book lungs located inside the arachnid are made up of several thin membranes somewhere between 10 and 80 depending the species. Some have a pair of book lungs others have several pairs.
Filters 0 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. Each book lung consists of hollow flat plates. Book lungs one of the two kinds of respiratory organ compare tracheal spiracles found in spiders.
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