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15 Cards in this Set

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appendage
For arthropods includes legs, antennae, claws and pincers
closed circulatory system
Blood containing food and oxygen moves through the body in a series of closed vessels
crop
A digestive system sac used for storage
exoskeleton
thick, hard, outer covering that protects and supports arthropod bodies and provides a place for muscles to attach
gill
organs that exchange carbon dioxide for oxygen in the water
gizzard
muscular digestive system structure in which earthworms grind soli and organic matter
mantle
thin layer of tissue that covers a mollusk's body organs; secretes the shell or protects the body of mollusks without shells
metamorphosis
process in which many insect species change their body form to become adults; can be complete (egg, larvae, pupa, adult) or incomplete (egg, nymph, adult)
molting
shedding and replacing of an arthropod's exoskeleton
open circulatory system
blood circulation system in which blood moves through the vessels and into open spaces around the body organs
radula
in gastropods, the tonguelike organ with rows of teeth used to scrape and tear food
setae
bristlike structures on the outside of each body segment that helps segmented worms move
spiracle
openings in the abdomen and thorax of insects through which air enters and waste gases leave
tube feet
hydraulic, hollow, thin walled tubes that end in suction cups and enable echinoderms to move.
water-vascular system
network of water filled canals that allows echinoderms to move, capture food, give off wastes, and exchange carbon dioxide and oxygen