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biology 27/28
| Term | Definition |
|---|---|
| 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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