Frog Anatomy Quiz
Questions: 16 · 10 minutes
1. During a dissection, a small greenish sac is found beneath the liver. What is it?
Pancreas, which releases digestive enzymes
Spleen, which filters blood
Gallbladder, which stores bile
Urinary bladder, which stores urine
2. In a male frog, which small ducts first carry sperm from the testes toward the kidneys?
Bile ducts
Vasa efferentia
Oviducts
Ureters
3. If a frog cannot use its lungs temporarily, which structure can still exchange respiratory gases directly with the environment?
Liver
Kidneys
Fat bodies
Moist skin
4. A pair of flattened, elongated organs lies against the posterior dorsal body wall. Which organs are these most likely to be?
Kidneys
Gonads
Fat bodies
Lungs
5. During a dissection, the coils of the small intestine remain connected by a thin, transparent membrane containing blood vessels. What is this membrane?
Peritoneum
Oviduct
Pleura
Mesentery
6. Which organ is the primary site where digested nutrients are absorbed into a frog's bloodstream?
Stomach
Large intestine
Small intestine
Esophagus
7. What is the main function of the yellow, fingerlike fat bodies found in a frog's body cavity?
Storing energy for periods such as hibernation and reproduction
Filtering nitrogenous waste from blood
Moving food through the intestine
Producing bile for digestion
8. A thin, diffuse gland is found in the tissue between the stomach and the first section of the small intestine. Which organ is it?
Spleen
Pancreas
Thyroid gland
Gallbladder
9. After a frog swallows an insect, which organ does the insect enter immediately after passing through the esophagus?
Stomach
Small intestine
Liver
Cloaca
10. How many chambers does a typical adult frog's heart have?
Three: two atria and one ventricle
Two: one atrium and one ventricle
Three: one atrium and two ventricles
Four: two atria and two ventricles
11. A blockage prevents bile from reaching the small intestine. Digestion of which nutrient would be most directly impaired?
Simple sugars
Minerals
Nucleic acids
Fats
12. A thin-walled, often bilobed sac is visible near the lower end of the large intestine. What structure is it?
Gallbladder
Urinary bladder
Pancreas
Spleen
13. A narrow slit is visible on the floor of a frog's pharynx. It opens into the respiratory passage leading toward the lungs. What is this opening called?
Gullet
Eustachian tube
Cloacal opening
Glottis
14. Which description best matches the frog's spleen?
A sac beneath the liver that stores bile
A long gland that produces eggs or sperm
A small, round organ in the mesentery involved in blood filtration and immune function
A chamber that receives digestive and urinary waste
15. Which feature most clearly distinguishes a frog's heart from a typical human heart?
The frog heart has no atria
The frog heart has a single ventricle
The frog heart pumps only deoxygenated blood
The frog heart is part of an open circulatory system
16. Digestive waste, urine, and reproductive products can all pass into which chamber before leaving a frog's body?
Duodenum
Glottis
Cloaca
Ventricle