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JUST VOCAB ARTHROPODS Chapters 38 & 39 PRACTICE VOCAB: Malpighian tubules Hollow projections of the digestive tract in arachnids and some insects that collect and remove nitrogen waste _____________________ Paired sacs with many folds that resemble the pages of a book in the abdomen of arachnids that function in gas exchange ____________________ Book lungs Excretory organs in crayfish that _____________________ Green glands remove excess water and nitrogen waste PRACTICE VOCAB: Joining of an egg & sperm outside the female’s body ____________________ External fertilization Kind of development in which offspring are born/hatch looking Direct development like their parents only smaller ____________________ Kind of circulatory system in which blood is contained inside vessels closed __________________ cheliped Large pincher claw on a crayfish __________________ PRACTICE VOCAB: tracheae System of tubes in spiders that ___________________ carry air directly to the tissues through openings in the exoskeleton Appendages that manipulate maxilla food and draw water ___________________ currents over the gills in a crayfish Openings in the exoskeleton that let air into the trachea _____________________ spiracles PRACTICE VOCAB: vertebrate Organism with a backbone ____________________ Organism whose blastopore protostome becomes its mouth ____________________ Process of occasionally shedding _______________ molting the exoskeleton of an arthropod so the organism can grow bigger Larger body section made by fusing smaller sections together Tagma __________________ pl. Tagmata PRACTICE VOCAB: Maintaining the correct balance of water and ____________________ osmoregulation ions in the body Appendages that aid in holding food and chewing ____________________ pedipalps in an ARACHNID Structures on the abdomen of a spider that release silk _____________________ spinnerets PRACTICE VOCAB: Joining of an egg & sperm inside the female’s body ____________________ Internal fertilization Kind of development in which development offspring hatch as larva and must Indirect ____________________ undergo metamorphosis to become adults Kind of circulatory system in which open blood is NOT contained in vessels __________________ and flows loose inside the coelom eye made of many individual light detectors each with its own lens Compound eye ______________________ PRACTICE VOCAB: invertebrate Organism without a backbone ____________________ Organism whose blastopore deuterostome becomes its anus ____________________ Parts that extend from the appendages surface of the body like arms, legs, __________________ antenna, maxillipeds Pincer-like mouth parts seen chelicera in spiders, scorpions, ticks __________________ PRACTICE VOCAB: Body cavity formed within the mesoderm that surrounds the internal organs ____________________ coelom Chewing mouthparts seen in crustaceans and insects ____________________ mandibles Outside body covering in an animal __________________ integument Free-swimming larva of crustaceans nauplius with one eye and multiple appendages ______________ PRACTICE VOCAB: telson Center section of a crayfish’s tail ________________________ swimmerets Small appendages on the abdomen ______________________ of a crayfish that create water currents and help in reproduction Large “feelers” on the head of a crayfish that sense touch and taste Body section posterior to the cephalothorax antenna __________________ Abdomen ________________________ PRACTICE VOCAB: The concentration of nervous tissue and sensory organs in the anterior end of an animal cephalization ____________________ In animals the body plan where the Bilateral left and right sides are mirror images symmetry of each other ____________________ Body section made by fusion of the head and thorax __________________ cephalothorax Organisms with 10 legs decapods __________________ PRACTICE VOCAB: uropods Side sections of a crayfish’s tail ____________________ that help in “tailflips” Term used to describe a female crayfish carrying eggs or larvae “In berry” ____________________ carapace Section of exoskeleton that __________________ covers the cephalothorax in a crayfish Open circulation Type of circulation in which __________________ hemolymph is NOT contained in blood vessels and flows loose inside the body spaces PRACTICE VOCAB: chelicera “fangs” in a spider ____________________ Skeleton on the outside of the body exoskeleton ____________________ Holes in the crayfish’s heart __________________ ostia that allow the return of blood Pincer-like mouth parts seen chelicera in spiders, scorpions, ticks __________________ PRACTICE VOCAB: arteries Blood vessels that carry blood ________________________ away from the heart cardiac Stomach closest to the mouth ______________________ Gastric mill Teeth in the stomach of a __________________ crayfish that help grind food Organisms with “jointed legs” Arthropods ________________________ PRACTICE VOCAB: veins Blood vessels that carry blood back ________________________ to the heart Subphylum that includes insects and myriapods leg with 2 branches Uniramia ______________________ biramous __________________ Nitrogen containing POLYSACCHARIDE that makes ________________________ the exoskeleton on arthropods sturdy but flexible chitin
