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Chapter 26 vocab

thorax middle body region of an arthropod consisting of three fused main segments that may bear legs and wings.
abdomen In arthropod, posterior body region of an arthropod that contains fused segments, digestive structures, reproductive organs, and bears additional legs; in humans, part of body that is between the diaphragm and pelvis
cephalothorax In arthropods, the structure formed from the thorax region fused with the head.
appendage in arthropods, a structure such as a leg or an antenna that grows and extends from the outside body covering.
molting In arthropods, the periodic shedding of the protective exoskeleton so their bodies can continue to grow
mandible In most arthropods, one of a pair of mouthparts adapted for biting and chewing food.
tracheal tube in most terrestrial arthropods, one of a system of tubes that branch into smaller tubules and carry oxygen throughout the body.
book lung in spiders the some other arthropods, the respiratory structure with highly folded walls whose membranes look like book pages
spiracle opening in the arthropod body through which air enters and waste gases leave.
malpighain tubule in most arthropods, the waste-excreting structure that also helps maintain homeostatic water balance.
pheromone chemical secreted by an animal species to influence the behavior of other members of the same species.
cheliped in most crustaceans, the first pair of legs, which has large class to trap and crush food.
swimmeret crustacean appendage used as a flipper during swimming.
chelicera one of a pair of arachnids appendages modified to function as fangs or pincers.
pedipalp one of a pair of arachnid appendages used for sensing and holding prey and in male spiders used for reproduction.
spinneret in spiders, the structure that spins sild form a fluid protein secreted by their glands.
metamorphosis in most insects, the series of changes from a larval form to an adult form.
pupa non feeding stage of complete metamorphosis in which the insect changes from the larval form to the adult form
nymph immature form of an insect during incomplete metamorphosis-the hatchling looks like a small adult insect and goes through several molts, eventually becoming a mature winged adult.
caste specialized group of individuals in an insect society that performs specific tasks
Created by: rroberto