How can we help?

You can also find more resources in our Help Center.

21 terms

Mrs. H. Ch 11 Fishes, Amphibians, and Reptiles

STUDY
PLAY
chordate
The phylum whose members have a notochord and a nerve cord. True vertebrates
notochord
A flexible rod that supports a chordate's back.
vertebrae
The bones that make up the backbone of an animal.
ectotherm
An animal whose body does not produce much internal heat.
endotherm
An animal whose body regulates its own temperature by controlling the internal heat it produces.
fish
An ectothermic vertebrate that lives in the water and has fins.
cartilage
A tissue that is more flexible than bone.
swim bladder
An internal gas-filled organ that helps a bony fish stabilize its body at different water depths.
amphibian
An ectothermic vertebrate that spends its early life in water and its adult life on land.
tadpole
The larval form of a frog or toad.
lung
An organ found in air-breathing vertebrates that exchanges oxygen and carbon dioxide with the blood.
atrium
An upper chamber of the heart that receives blood.
ventricle
A lower chamber of the heart that pumps blood out to the lungs and body.
habitat
The specific environment in which an animal lives.
reptile
An ectothermic vertebrate that lays eggs and has lungs and scaly skin.
kidney
An organ that filters wastes from the blood.
urine
A watery fluid produced by the kidneys that contains wastes.
amniotic egg
An egg with a shell and internal membranes that keep the embryo moist.
fossil
The hardened remains or other evidence of a living thing that existed a long time ago.
sedimentary rock
Rock formed of hardened layers of sediments.
paleontologist
A scientist who studies extinct organisms, examines fossil structure, and makes comparisons to present-day organisms.