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44 terms

Vertebrates and Amphibians

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