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Ch 3 Vertebrate

TermDefinition
Chordate The phylum whose members have a notochord, a nerve cord, and slits in their throat area at some point in their lives.
Vertebra The bones that make up the backbone of an animal.
Notochord A flexible rod that supports a chordate's back.
Ectotherm An animal whose body does not produce much internal heat.
Cartilage A flexible, strong tissue that is softer than bone.
Endotherm An animal whose body controls and regulates its temperature by controlling the internal heat it produces.
Fish An ectothermic vertebrate that lives in the water and has fins.
Swim Bladder An internal gas-filled organ that helps a bony fish stabilize its body at different water depths.
Buoyant Force The force that water exerts upward on any underwater object.
Amphibian An ectothermic vertebrate that spend its early life in water and its adulthood on land, returning to water to reproduce.
Habitat The specific environment in which an animal lives.
Atrium A upper chamber of the heart.
Ventricle The lower chamber of the heart, which pumps blood out to the lungs and body.
Reptile An exothermic vertebrate that has lungs and scaly skin.
Urine The watery fluid in which the wastes produced by an animal's cells are excreted.
Fossil The hardened remains or other evidence of a living thing that existed a long time in the past.
Sedimentary Rock Rock formed from hardened layers of sediments-- particles of clay, sand, mud, or silt.
Paleontologist A scientist who studies extinct organisms, examines fossils structure and makes comparisons to present day organisms.
Created by: DBZ/Spike
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