External Anatomy
This large, bulging feature on a frog’s head gives it nearly 360° vision.
eyes
This organ pumps blood through the frog’s body.
heart
Food first enters this body part.
mouth
During development, tadpoles lose this organ as they transition into adults
gills
This frog body part is sticky, spring-loaded, and helps catch bugs.
tongue
These small openings on the frog’s nose help it breathe at the surface of the water.
nares
Stores extra bile produced by the liver.
gall bladder
This long muscular tube connects the mouth to the stomach.
esophagus
The frog’s urine, feces, and reproductive cells all exit through this one opening.
cloaca
This liquid waste product is produced by the kidneys.
urine
These teeth, found only on the upper jaw, help frogs hold their prey.
Vomerine teeth
Frogs have this many chambers in their heart.
3
This organ produces digestive enzymes and hormones to regulate the body processes of the frog.
pancreas
This thin-walled organ temporarily stores urine.
urinary bladder
This organ, divided into three lobes, produces bile.
liver
This skin fold inside the frog’s mouth connects to the eardrum and helps equalize pressure.
eustachian tubes
These are the long, yellow, finger-like structures that store fat for hibernation.
fat bodies
This part of the intestine absorbs most nutrients.
small intestine
absorbs water from waste
This chamber of the heart receives oxygen-rich blood from the lungs.
left atrium
This structure covers and protects the frog’s eyes underwater.
nictitating membrane
Small and spongy, where a portion of respiration occurs
Lungs
This flap prevents food from entering the frog’s lungs.
glottis
These paired organs filter waste from the frog’s blood.
kidneys
This structure allows frogs to hear and detect vibrations.
tympanic membrane