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biology 27/28

TermDefinition
neural crest group of cells that develops from the embryo ectoderm and contributes to the development of many vertebrate structures
pedicellaria small pincher that helps echinoderms catch food and remove foreign materials from the skin
operculum movable protective flap that covers a fishes gills and helps to pump water that enters the mouth and moves over the gills
swim bladder gas filled internal space in bony fishes that allows them to regulate their buoyancy
tympanic membrane eardrum
ventricle he heart chamber that pumps blood from the heart to the gills or lungs
lateral line system sensory receptors that enable fishes to detect vibrations or sound waves in water
tetrapod our footed animal with legs that have feet and toes with joints
spawning process by which male and female fish release their gametes near each other in the water
atrium heart chamber that receives blood from the body
ectotherm animal that cannot regulate its body temperature through its metabolism and obtains its body heat from the external environment
water vascular system system of fluid filled closed tubes that allow echinoderms to control movement and get food
madreporite strainer like opening through which water enters the water vascular system in most echinoderms
ampulla in echinoderms the muscular sac that contracts to force water into the tube feet allowing it to extend
chordate animal of the phylum chordata having a dorsal tubular nerve cord a notochord pharyngeal pouches and a postanal tail at some point in its development
cartilage flexible tough material that makes up vertebrate skeletons or parts of vertebrate skeletons
postanal tail chordate structure used primarily for locomotion
scale small flat platelike structure near the surface of the skin of most fish can be ctenoid cycloid placoid or genoid
invertebrate chordate chordate without a backbone
dorsal tubular nerve cord tube shaped chordate nerve chord located above the digestive organs
tube feet one of the muscular small fluid filled tubes with suction cuplike ends that enable echinoderms to move and collect food
pharyngeal pouch in chordate embryos one of the paired structures connecting the muscular tube lining the mouth cavity and the esophagus
fin paddle shaped structure of a fish another aquatic animal used for steering balance and propulsion
notochord flexible rodlike structure extending the length of the chordate body enabling the body to bend and make side to side movement
cloaca the chamber that receives digestive waste urinary waste and eggs or sperm before they leave the body
nephron filtering unit of the kidney
Created by: eeveelover2000
 

 



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