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Life Science

Ch. 15 Vocab

TermDefinition
amniotic egg An egg with a shell that contains food fro the embryo and a mechanism for gas exchange and waste removal.
arteries Structures that carry blood away from the heart.
atria (singular atrium Heart chambers which receive the blood coming to the heart.
beds Usual formation of capillaries.
bone Endoskeletal structure that is much harder than cartilage.
boney fish Fish with skeletons made of bone.
breathe Action that allows for constant air movement to proper gas exchange can occur.
caecilians Legless amphibians with tails
capillaries Small blood vessels where gas and nutrient exchange occurs.
cartilage Endoskeletal structure that is made up of proteins and carbohydrates and is not as hard as bone.
cartilaginous fish Fish with skeletons made from cartilage.
chambers Separate spaces in vertebrate hearts.
Chordata Phylum classification of all vertebrates.
denticles The scales of cartilage fish.
deoxygenated blood Blood returning to the heart and has a low concentration of oxygen.
ectotherms Cold-blooded animals, meaning they are not able to generate their won body heat and are dependent upon their environments to maintain a homeostatic body temperature.
elastic Flexible.
embryo A developing organism formed as a result of sexual reproduction.
endotherms Animals that produce their own body heat and are not dependent upon the environment to maintain a homeostatic body heat.
external fertilization The process where fertilization occurs outside of the female's body, typical of fish and amphibian modes of fertilization.
gills Specialized tissue that can extract oxygen from and release carbon dioxide into the water.
heart Organ that pumps blood throughout the body of an animal
internal fertilization The process where fertilization occurs inside the female and is typical of cartilage fish, reptiles, birds and mammals.
jawless fish Fish without jaws.
lateral line A group of nerve cells running down both sides of fish.
left atrium Heart structure which receives oxygenated blood returning from the lungs; found only in organisms with a two-loop system.
left ventricle Heart structure that pumps blood to the body.
lungs The organs that perform gas exchange in terrestrial animals and aquatic mammals.
one-loop system Circulatory system in which blood flows from the hear to the fills to the tissues, then back to the heart.
oxygenated blood Blood that has a high concentration of oxygen.
pits Sensitive heat detectors some snake species have on their heads.
pulmonary circulation The circulatory loop that brings deoxygenated blood to the lungs from the heart so it can be oxygenated and return to the heart.
right atrium Heart structure which receives deoxygenated blood from the heart to the tissues so the tissues can get oxygen and release carbon dioxide then return to the heart.
right ventricle Heart structure that pumps deoxygenated blood to the lungs.
scales Structures that serve as protection and help streamline the fish's body for swimming.
spawning Method of fish reproduction.
systemic circulation The circulatory loop that brings oxygenated blood from the heart to the tissues so the tissues can get oxygen and release carbon dioxide, then return to the heart.
tadpole The larval, or immature, form of an amphibian.
two-loop system A circulatory pattern in which blood is pumped from the heart to the lungs and back to the heart in one loop and from the heart to the tissues and back in to other loop.
venom Poison that is injected into prey when it is bitten.
ventricle A muscular heart chamber that pumps blood away from the heart, into the arteries.
Created by: kaisnead
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