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20 terms

Amphibians

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