Books lungs are lung like organs found in arthropods. They function much like advanced lungs by exchanging atmospheric gases. Pockets of hemolymph pool in the lungs and are saturated by gases.
spiracles?Spiracles are tiny holes on an insects abdomen used for respiration.Arachnids are the class of Arthropods that use book lungs for respiration. Although the class is divided into Pulmonate Arachnids (Contain book lungs) and Apulmonate Arachnids (Lacking book lungs).The horseshoe crab has book gills which evolved into book lungs in other creatures.
The arthropods are a phylum, a larger division than a class. Arthropoda has classes within it.
The Insecta class of arthropods may have wings. Insects are the only arthropods (and the only invertebrate) to have flight capability; but not all insects have wings.
Arthropods
Arthropoda is a phylum which is superior to class level .
Aquatic arthropods mostly exchange gases through (c) gills; some (like the horseshoe crabs) have book gills. The "book lungs" term usually applies to most arachnids like scorpions and spiders, which are terrestrial; most other terrestrial arthropods exchange gases through special holes in their segments called spiracles, attached to the tracheal tubules/tracheola which connect directly to the tissues.
Insects (class insecta) is the largest class of arthropods
the whole class reviewed well for their quiz today about arthropods.
crustaceans
arachnid
A class of myriapod arthropods that comprises the centipedes.
Phylum: Arthropods Class: Crustaceans