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Frog
Dissection Lab Worksheet |
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1. What do you think is the function of the nictitating membrane, and
why?
2. A frog does not chew its food.What do the positions of its teeth suggest
about how the frog uses them?
3. Trace the path of food through the digestive tract.
4. Trace the path of blood through the circulatory system, starting at the
right atrium.
5. Trace the path of air through the respiratory system.
6. Trace the paths of sperm in a male and eggs in a female.
7. Trace the path of urine in both sexes.
8. Which parts of the frogs nervous system can be observed in its abdominal
cavity and hind leg?
9. Suppose in a living frog the spinal nerve extending to the leg muscle were
cut. What ability would the frog lose? Why?
10. The abdominal cavity of a frog at the end of hibernation season would contain
very small fat bodies or none at all. What is the function of the fat bodies?
11. Structures of an animals body that fit it for its environment are
adaptations. How do the frogs powerful hind legs help it to fit into
a life both in water and on land?
12. During one mating of frogs, the female lays some 2,000 to 3,000 eggs in
water as the male sheds millions of sperm over them. How do these large numbers
relate to the frogs fitness for life in water?
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