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VOCAB ONLY Arthropods. exoskeleton. open. Skeleton on the outside of the body ____________________ Circulatory system in which _____________________ Circulatory fluid is NOT contained in vessels Big pincher claw on a crayfish __________________
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exoskeleton open Skeleton on the outside of the body ____________________ Circulatory system in which _____________________ Circulatory fluid is NOT contained in vessels Big pincher claw on a crayfish __________________ Ability to drop off a body part to escape a predator _______________________ cheliped autotomy
regeneration Ability to regrow a lost body part ____________________ Smaller feelers that sense touch, taste, and equilibrium ____________________ Part of the exoskeleton in a crayfish that covers the cephalothorax __________________ Type of larva with 3 pairs of appendages and one eye_________________________ antennules carapace nauplius
Compound eye An eye composed of many ____________________light detectors each with it own lens One of 10 bilaterally paired appendages on the abdomen of a crayfish that create watercurrents, transfer sperm (males) & carry young (females) ____________________ A heart shaped movable mouth part that functions in chewing in a crayfish ________________________ Blood in an animal with open circulation ______________________________ swimmerets mandible hemolymph
maxilliped Thoracic appendage in arthropods used to touch, taste, and manipulate food __________________ Larger segment made byfusing smaller sections together _____________ Structure through whichspiders release silk ________________________ Center section of acrayfish’s tail ____ tagma spinnerets telson
uropods Side sections of acrayfish’s tail ____________________ Carbohydrate found in theexoskeleton of arthropodsthat makes it flexible ____________________ Process of periodically shedding the exoskeleton toallow growth ________________________ chitin molting
Malpighian tubules Main excretory organ inmost insects and somemyriapods and arachnids _______________ An organ for gas exchange inthe abdomen of arachnidswith parallel folds that resemblea book ________________________ Free swimming larva seen in Crustaceans with 3 pairs ofappendages and one eye ___________________ Book lungs Nauplius
External fertilization Joining of egg and spermoutside the body ____________________ Organ for osmoregulationand excretion of nitrogenwaste in crayfish ____________________ Body system that useshormones to control other body systems ___________________ Green glands Endocrine
osmoregulation Maintaining the balanceof water and ions in the body ________________ Concentration of nervousand sensory tissue in theanterior end of an animal__________________ Ability to self-amputate body parts ________________________ Ability to regrow lost body parts _______________ cephalization autotomy regeneration
gills Respiratory organ thatexchanges gases with water__________________ Reproductive organ thatmakes sperm ____________________ General term forreproductive organs ___________________ Nerve center found in thehead ______________________________ testes gonads Cerebral ganglia
Vas deferens Small tubules that carrysperm to the exit __________________ Reproductive organ thatmakes eggs ____________________ Part of the exoskeletonthat covers the cephalothorax________ A pincer-like mouthpart insome arthropods like arachnids ____________ ovary carapace chelicera