Body Systems
produces bile
liver
In this part of a fish, deoxygenated blood becomes oxygenated
gills
Young amphibians have this organ that the adults usually do not have
gills
All reptiles are born with this that is used for breathing
lungs (they do not have gills)
A muscle important to breathing
diaphragm
The walls of a vertebrate heart chamber are made of this
muscle
A fish moves by flexing this
its entire body
Amphibians undergo this process, whereas no other vertebrates do
metamorphosis
Snakes lack this sense
hearing
This part of the body is a large and complex sensory organ
eye
This part of the body has many capillaries
lungs
Lampreys and hagfish differ from other fish because they lack this
jaws
A frog has this many sets of teeth
2
This animal molts its scales regularly
snake
Branches off the spinal cord
spinal nerve
Describes blood that has a high carbon dioxide content
deoxygenated
Fish and sharks have ____ - chambered hearts
2
The state of inactivity that amphibians may enter during hot dry weather
estivation
This is a very large reptile
Komodo dragon
Absorbs digested food
small intestine
The parts of the central nervous system
brain spinal cord
A fish's skeleton is made of this
cartilage
Describe two special features of a frog's tongue
sticky
attached at the front of its mouth
used to catch food
These reptiles inhabit more areas of the United States than its "opposite" do
alligators
"opposite" = crocodile
The structure that manufactures urine by filtering the blood
kidney