either of two saclike respiratory organs in the chest of vertebrates
carries oxygenated blood from the lungs to the heart
cold-blooded vertebrate typically living on land but breeding in water
because amphibians have lungs, they also have this more evolved circulatory system than fish.
a life cycle that includes 4 distinct stages
Divides the right and left chambers of the heart
a larval frog or toad
any of various typically terrestrial amphibians that resemble lizards and that return to water only to breed
Amphibian order that includes frogs, toads, tree toads
the membrane in the ear that vibrates to sound
common opening for digestive, urinary, and reproductive tracts
largest part of the brain. more advanced in amphibians than in fish.
The bones in the chest that protect the heart and lungs. Frogs do not have them.
parts of the spine. Frogs have nine.
A unique bone found in the pelvic girdle of a frog. Muscles attatch to it for jumping.
order of salamanders (visible tail)
the process by which the female lays eggs and the male fertilizes them in the water.
rare tropical, burrowing amphibeans
Blind, limbless amphibian order
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