book lung การใช้

• Both their book lungs and the anterior median eyes.
• The bottom side of the abdomen is usually brown with yellow book lungs.
• Book lungs are not related to the lungs of modern land-dwelling vertebrates.
• The unfolded " pages " ( plates ) of the book lung are filled with hemolymph.
• See branchiostegal lung and book lung.
• Recent Mesothelae are characterized by the narrow mygalomorph spiders, they have two pairs of book lungs.
• The respiratory system consists only of book lungs, which could help explain why they are relatively inactive.
• In a very few species the book lungs have developed deep channels, apparently signs of evolution into tracheae.
• Unlike almost all other araneomorph or " true " spiders, members of the family have four book lungs.
• Like the " primitive " suborder of spiders Mesothelae, they have two pairs of book lungs, and downward pointing chelicerae.
• Like all species in the family Hypochilidae, " Hypochilus thorelli " has four book lungs, like araneomorph spiders.
• The oldest book lungs have been recovered from extinct trigonotarbid arachnids preserved in the 410-million-year-old Rhynie chert of Scotland.
• Mantispids that board spiders usually adopt positions on or near the base of the abdomen; some species may enter the spider's book lungs.
• The second segment bears a pair of featherlike sensory organs known as the pectines; the final four segments each contain a pair of book lungs.
• Among smaller araneomorph spiders there are species in which the anterior pair of book lungs have also evolved into tracheae, or are simply reduced or missing.
• Each of the somites 3 to 7 bears a pair of spiracles; they serve as openings for the scorpion's respiratory organs, known as book lungs.
• Some palpigrades have three pairs of abdominal lung-sacs, although these are not true book lungs as there is no trace of the characteristic leaflike lamellae which defines book lungs.
• Some palpigrades have three pairs of abdominal lung-sacs, although these are not true book lungs as there is no trace of the characteristic leaflike lamellae which defines book lungs.
• Some flies in the family Acroceridae which are endoparasites of mygalomorphs may remain dormant in the book lungs for as long as 20 years before beginning their development and consuming the spider.
• Fossils of aquatic scorpions with gills appear in the Silurian and Devonian periods, and the earliest fossil of an air-breathing scorpion with book lungs dates from the Early Carboniferous period.