cold blooded vertabrates 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
swim bladder
a gas filled sac that is used to control buoyancy ; also known as a gas bladder
jawless fish
amperes and the hagfish, Agnatha
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
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 surrounded by a shell
cartilaginous fishes
sharks, rays, and skates
bony fishes
lungfish, catfish, clownfish
caecilians
caecilians are a group of limbless, vermiform, or serpentine amphibians
salamanders
newts, olm, and sirens
