Frog Organ Functions

Question 1

Thin covering that allows the frog to absorb oxygen without breathing.

Answer 1

Skin

Question 2

Dark coloring on the back and light coloring on the belly that allows the frog to blend in with its background when viewed either from above or below.

Answer 2

Countershading

Question 3

Random spots on the skin of a leopard frog that help camouflage it by breaking up its shape.

Answer 3

Chromatophores

Question 4

Muscular organ that pumps blood throughout the frog’s body.

Answer 4

Heart

Question 5

Membrane that protects the heart.

Answer 5

Pericardium

Question 6

Two upper chambers of the heart that receive blood from the veins.

Answer 6

Atria (singular = atrium)

Question 7

Lower chamber of the heart that pumps blood out to the arteries.

Answer 7

Ventricle

Question 8

The major artery that leaves the heart.

Answer 8

Aorta

Question 9

Major vein that brings blood from the lower half of the body back to the heart.

Answer 9

Inferior Vena Cava

Question 10

Slit-like opening on the floor of the mouth that controls movement in and out of the lungs.

Answer 10

Glottis

Question 11

Organs responsible for gas exchange (taking in oxygen and releasing CO2).

Answer 11

Lungs

Question 12

Sharp, jagged projections along the upper jaw that help the frog capture prey.

Answer 12

Maxillary Teeth

Question 13

Bumps on the roof of the mouth that help the frog crush its prey.

Answer 13

Vomerine Teeth

Question 14

Muscular opening in the back of the mouth that sends food to the esophagus.

Answer 14

Gullet

Question 15

Organ that moves food from the mouth to the stomach.

Answer 15

Esophagus

Question 16

Muscular organ that releases acids and enzymes to digest proteins.

Answer 16

Stomach

Question 17

Circular muscle that controls the movement of food between the stomach and the small intestine.

Answer 17

Pyloric Sphincter

Question 18

Organ that produces bile and filters toxins out of the blood.

Answer 18

Liver

Question 19

Organ that stores and releases bile when fats are digested.

Answer 19

Gall Bladder

Question 20

Organ that absorbs nutrients after food has been digested.

Answer 20

Small Intestine

Question 21

Organ that forms feces by reabsorbing water from partially-digested food.

Answer 21

Large Intestine / Colon

Question 22

Opening used to release feces, urine, and gametes (sperm or egg cells).

Answer 22

Cloaca

Question 23

Membranes that hold the digestive system in place.

Answer 23

Mesentery

Question 24

Organ that filters minerals from the blood, balances the salt content of blood, and forms urine.

Answer 24

Kidney

Question 25

Tube that carries urine from the kidney to the bladder.

Answer 25

Ureter

Question 26

Organ that stores and releases urine as needed.

Answer 26

Urinary Bladder

Question 27

Tube that carries urine from the bladder to the cloaca.

Answer 27

Urethra

Question 28

Organ that helps protect the frog from diseases as part of its immune system.

Answer 28

Spleen

Question 29

Structures that store fat molecules so that the frog still has energy when food is scarce.

Answer 29

Fat Bodies

Question 30

Stretchable skin of the throat that male frogs use to attract females by singing.

Answer 30

Vocal Sacs

Question 31

Enlarged structure on male frogs that helps them grip females during mating.

Answer 31

Thumb pads

Question 32

Male organ that produces sperm cells and male sex hormones (testosterone).

Answer 32

Testes

Question 33

Male organ that carries semen from the testes to the cloaca.

Answer 33

Seminal Vesicles or Vas Deferens

Question 34

Female organ that produces eggs and female sex hormones (estrogen).

Answer 34

Ovaries

Question 35

Female organ that carries eggs from the ovaries to the cloaca.

Answer 35

Oviducts

Question 36

Opening between the middle ear and the mouth that is used to balance pressure inside the head.

Answer 36

Eustachian Tube

Question 37

Opening from the front of the head to the roof of the mouth that the frog uses to smell.

Answer 37

Nares (internal and external)

Question 38

Membrane that protects the eye during feeding and while swimming underwater.

Answer 38

Nictitating Membrane

Question 39

Membrane that transmits sound vibrations to the inner ear.

Answer 39

Tympanum