Cold-Blooded Vertebrates Flashcards
Vertebrates
an animal that has a backbone
Endotherm
an animal that can use body heat from chemical reactions in the body’s cells to maintain a constant body temperature
Ectotherm
an organism that needs sources of heat outside of itself
Lateral Line
a faint line visible on both sides of a fish’s body that runs the length of the body and marks the location of sense organs that detect vibrations in water
Gill
a respiratory organ in which oxygen from the water is exchanged with carbon dioxide from the blood
Jawless Fishes
hagfish and lampreys
Cartilaginous Fishes
sharks skates and rays
Bony Fishes
goldfish tuna trout catfish and cod
Swim Bladder
a gas-filled sac that is used to control buoyancy; also known as a gas bladder
Lung
a respiratory organ in which oxygen from the air is exchanged with carbon dioxide from the blood
Tadpole
the aquatic fish shaped larva of a frog or toad
Metamorphosis
a phase in the life cycle of many animals during which a rapid change from the immature form of an organism to the adult form takes place
Caecilians
amphibians that don’t have legs
Salamanders
amphibians that live under stones and logs in the woods
Frogs
has smooth soft skin
Toads
spend less time in water than frogs and have drier bumpier skin
Amniotic Egg
a type of egg that is surrounded by a membrane the amnion and that in reptiles birds and egg laying mammals contains a large amount of yolk and is surrounded by a shell
Turtles
lives in water and has a shell
Tortoises
live on land and has a shell
Crocodiles
has a narrow head and pointed snout
Alligators
has a broad head and round snout
Snakes
has special organs in the mouth that helps them smell prey
