JUST VOCAB

1. JUST VOCAB ARTHROPODS Chapters 38 & 39

2. Malpighiantubules PRACTICE VOCAB: Hollow projections of the digestivetract 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 ____________________ Excretory organs in crayfish that _____________________ remove excess water and nitrogen waste Book lungs Green glands

3. External fertilization PRACTICE VOCAB: Joining of an egg & sperm outsidethe female’s body ____________________ Kind of development in whichoffspring are born/hatch lookinglike their parents only smaller ____________________ Kind of circulatory system in whichblood is contained inside vessels __________________ Large pincher claw on a crayfish __________________ Direct development closed cheliped

4. tracheae PRACTICE VOCAB: System of tubes in spiders that ___________________carry air directly to the tissues throughopenings in the exoskeleton Appendages that manipulatefood and draw water ___________________currents over the gills in a crayfish Openings in the exoskeleton _____________________ that let air into the trachea maxilla spiracles

5. vertebrate PRACTICE VOCAB: Organism with a backbone ____________________ Organism whose blastopore becomes its mouth ____________________ Process of occasionally shedding _______________ the exoskeleton of an arthropod so the organism can grow bigger Larger body section made by fusing __________________smaller sections together protostome molting Tagma pl. Tagmata

6. osmoregulation PRACTICE VOCAB: Maintaining the correct balance of water and ____________________ ions in the body Appendages that aid inholding food and chewing ____________________ in an ARACHNID Structures on the abdomen ofa spider that release silk _____________________ pedipalps spinnerets

7. Internal fertilization PRACTICE VOCAB: Joining of an egg & sperm insidethe female’s body ____________________ Kind of development in whichoffspring hatch as larva and must ____________________ undergo metamorphosis to become adults Kind of circulatory system in whichblood is NOT contained in vessels __________________ and flows loose inside the coelom eye made of many individual light ______________________ detectors each with its own lens Indirect development open Compound eye

8. invertebrate PRACTICE VOCAB: Organism without a backbone ____________________ Organism whose blastopore becomes its anus ____________________ Parts that extend from the surface of the body like arms, legs, __________________antenna, maxillipeds Pincer-like mouth parts seenin spiders, scorpions, ticks __________________ deuterostome appendages chelicera

9. coelom PRACTICE VOCAB: Body cavity formed within the mesoderm that surroundsthe internal organs ____________________ Chewing mouthparts seen in crustaceans and insects ____________________ Outside body covering in an animal __________________ Free-swimming larva of crustaceans with one eye and multiple appendages ______________ mandibles integument nauplius

10. telson swimmerets PRACTICE VOCAB: Center section of a crayfish’s tail ________________________ Small appendages on the abdomen ______________________ of a crayfish that create water currents and help in reproduction Large “feelers” on the head of acrayfish that sense touch and taste __________________ Body section posterior to the cephalothorax ________________________ antenna Abdomen

11. cephalization PRACTICE VOCAB: The concentration of nervous tissue and sensory organs in the anterior end of an animal ____________________ In animals the body plan where the left and right sides are mirror images of each other ____________________ Body section made by fusion of the head and thorax __________________ Organisms with 10 legs __________________ Bilateral symmetry cephalothorax decapods

12. uropods PRACTICE VOCAB: Side sections of a crayfish’s tail ____________________ that help in “tailflips” Term used to describe a female crayfish carrying ____________________eggs or larvae Section of exoskeleton that __________________ covers the cephalothoraxin a crayfish Type of circulation in which __________________hemolymph is NOT contained inblood vessels and flows loose inside the body spaces “In berry” carapace Open circulation

13. chelicera exoskeleton PRACTICE VOCAB: “fangs” in a spider ____________________ Skeleton on the outside ____________________of the body Holes in the crayfish’s heart __________________ that allow the return of blood Pincer-like mouth parts seenin spiders, scorpions, ticks __________________ ostia chelicera

14. arteries PRACTICE VOCAB: Blood vessels that carry blood ________________________ away from the heart Stomach closest to the mouth ______________________ Teeth in the stomach of a __________________ crayfish that help grind food Organisms with “jointed legs” ________________________ cardiac Gastric mill Arthropods

15. veins Uniramia PRACTICE VOCAB: Blood vessels that carry blood back ________________________ to the heart Subphylum that includes ______________________ insects and myriapods leg with 2 branches __________________ Nitrogen containing POLYSACCHARIDE that makes ________________________ the exoskeleton on arthropods sturdy but flexible biramous chitin