The phylum name for any animal with a skull and backbone
Responsible for surrounding and protecting an animal's nerve cord
The skeletal structures of all vertebrate embryos are made of this
An animal that maintains a constant body temperature, even if the environment changes
An animal whose body temperature changes if the surrounding environment does
These structures must have developed in order for amphibians to live and get oxygen on land
Amphibians evolved directly from these animals
This word means "double life"
These were the first animals to be able to live most of their lives on land
Instead of using lungs or gills, some amphibians get oxgen by using this organ
The change from a larval form to an adult
These amphibian embryos have gills and do not have legs (yet)
These amphibians have no legs and are shaped like a snake
These amphibians look the most like prehistoric ones
These amphibians have a tail and four legs
These structures allow for a frog to hear
These holes are found on the roof of a frog's mouth next to the vomarine teeth
These two teeth are positioned on the roof of a frog's mouth
These frog teeth are around the outer edge of the upper part of a frog's mouth
This tube leads from a frog's mouth to its stomach
A frog's tongue attaches to this part of its mouth
This organ pumps blood and is made up of two atria and one ventricle
These stretchy respiratory organs are positioned on either side of the heart.
The job of this organ is to filter blood and produce bile, which breaks down fats and stores sugars
This greenish sac is found between the lobes of the liver
The function of this organ is to store bile
This is the first organ of digestion for a frog
Chemical digestion and absorption takes place in this organ
This organ collects food that cannot be digested
This organ comes right after the stomach
This reddish-brown spherical organ is found in the mesentary that holds the small and large intestine
This organ breaks down old blood cells and produces new ones
This is where the digestive, urogenital, and reproductive systems end in a frog
This is another name for a frog's anus
Externally, to tell whether a frog is a male or female, you would examine the size of this structure
These organs filter wastes from the blood and excrete them as urine
These organs are located on the dorsal wall of the frog. Fat bodies and reproductive organs are attached to them
This tube connects the kidney to the bladder
This flap-like structure collects urine
These organs produce eggs in female frogs
These organs produce sperm in male frogs
Another name for "warm-blooded"
Another name for "cold-blooded"
These yellowish and finger-like organs store fat that frogs use during hibernation
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