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Frog Dissection
Name: ____________________
Block: ___________
Date: ___________
Scientific Drawing: (10pts)
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Complete a scientific drawing of the internal anatomy of the frog.

Use the white paper provided. Don’t forget the “rules”!
Include the following structures:
fat bodies
liver
reproductive organs
gallbladder
lungs
(ovary or testis)
heart
kidneys
small intestines
large intestines
pancreas
spleen
stomach
Discussion Questions: (18pts)
Title
Labels
Structures
Resemblance
Total =
/1
/1
/6
/2
/10
1.
List two functions of the frog’s appendages.
2.
What are two functions of the frog’s nictitating membrane?
3.
Describe the toes once the skin has been removed. Are they webbed? Are they jointed?
4.
Amphibians are ectotherms (cold-blooded). How does this affect their daily life? How are the fat bodies used?
5.
Digestive:
a. Why is the tongue attached to the anterior (front) part of the lower jaw instead of the posterior (back) like
humans? Why would the tongue of a living frog be sticky?
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b.
6.
7.
What is the function of the vomerine teeth?
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c. What is the function of the gall bladder? Hint: Same as humans! _____________________________
d. What is the function of the pancreas? Hint: Same as humans! _____________________________
Respiratory: How does an adult frog breathe? Give two methods.
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Reproductive:
a.
b.
What structure produces the eggs in females? Hint: Same as humans!
Describe the lifecycle of a frog.
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Conclusion (2pts)
Which specimen lab (pig heart or frog dissection) did you learn the most from? Explain.
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