Amphibians

Created by heasulli 

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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

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