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Date:
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Answer using Complete Sentences
Natural History
1. What structure do all vertebrates share in common?
2. What does the term amphibian mean, and why is it a proper classification for frogs?
External Anatomy
1. Is it easy to tell a male and female frog apart?
2. What important function does the frog’s skin perform?
3. How are the positions of the frog’s eyes different from that of a human, and why is this
advantageous (or good) for the frog?
4. What is the function of the tympanic membranes, and which human structures are they
most similar to?
5. Why are forelimbs smaller and less muscular than the hind legs?
6. Drag the text boxes below to their correct location on the frog image below.
Anterior
Posterior
Dorsal
Ventral
Torso
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Internal Anatomy
First Cut
1. When dissecting the frog do you start with the ventral or dorsal side up?
Digestive System
2. Name at least 4 organs in the digestive system.
3. What is the function of the digestive system?
Respiratory System
4. What organ connects the lungs to the mouth?
5. Frog’s use what two organs to exchange gases? Humans only
use one of these organs.
Circulatory System
6. What are the 3 types of blood vessels?
7. How does a frog heart differ from a human heart? Is there a reason for this difference?
Reproductive System
8. What is the function of the fat bodies?
9. How is frog reproduction different from human reproduction?
Excretory System
10. What are the main structures in both the human and frog excretory system?
11. What is the function of the kidneys, and how does waste from the kidneys exit the
frog?
Nervous System
12. List 3 structures that are part of the frogs nervous system.
13. How is a frog brain different form a human brain?
Muscular System
14. What do muscles found in the frog’s upper leg move?
15. What do muscles found in the frog’s lower leg move?
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