Cold-Blooded Vertebrates Flashcards
(25 cards)
Vertebrates
animal that has a backbone
Endotherms
animal that is dependent on or capable of the internal generation
Ectotherms
an animal that is dependent on external sources of body heat
Lateral line
a faint line visible on both sides of a fish’s body that runs the length of the body and a marks the location of sense organs that detect vibrations in water
Gills
a respiratory organ in which oxygen from the water is exchanged with carbon dioxide from the blood
Jawless fishes
hagfish, lampreys
Cartilaginous Fishes
sharks, skates, rays
Bony fishes
eels, herrings, trout
swim bladder
a balloonlike organ that is filled with oxygen and other gases
amphibians
animals that can live in water and have lungs and legs
lungs
a saclike organ that takes oxygen from the air and delivers oxygen to the blood
tadpole
an immature frog or toad that must live in water
metamorphosis
change from an immature form to an adult
Caecilians
amphibians that live in tropical areas of asia, africa, south america- no legs, bony scales
salamanders
long tail, four legs,
frogs
strong leg muscles, well-developed ears, vocal cords, long, sticky tongue,
toads
skin is drier and bumpier, spend less time in water
reptiles
first animals to live outside of water
amniotic eggs
an egg that holds fluid that protects the embryo
turtles
live in water most of the time-shell makes them slow and inflexible
tortoises
live on land- shell makes then slow
crocodiles
large reptiles found in tropical parts of asia and australia
snakes
legless, carnivorous reptiles
lizard
dry, scaly skin, four legs, clawed feet, long tail
