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19 Cards in this Set

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in arthropods, a structure that extends from the body wall
appendage
mid-body region in arthropods
thorax
the body region of some arthropods that consists of a head fused with a thorax
cephalothorax
eye made of thousands of individual visual units
compound eye
a periodic shedding of an arthropod's exoskeleton; also found in some reptiles
molting
tube that carries air from the larynx to the lungs
trachea
respiratory opening of certain arthropods that allows for the passage of air into the body
spiracle
slender; fingerlike organ of excretion that opens into the gut of certain arthropods
malpighian tubule
paired mouthparts of arachnids and their relatives that re modified into fangs or pincers
chelicera
in arachnids, a second pair of appendages that re modified to catch and handle prey
pedipalps
modified appendages in arthropods that allows for the passage of air into the body
spinneret
chewing mouthpart found in may arthropods
mandible
dramatic physical change through which an immature organs passes as it grows to adulthood
metamorphosis
protective capsule enclosing the transforming larva in insects
chrysalis
stage of complete metamorphosis in which an insect changes from larva to adult
pupa
juvenile stage of some insects that is a smaller version of the adult
nymph
role played by an individual insect in a colony
caste
larval form of a crustacean
nauplius
small marine crustacean that is the cheif food source for many marine species
krill