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Science.7
Virtual Frog Dissection
Essential Questions
1. How is the human body
organized?
2. What are the body systems
and what are their
functions?
3. How is a frog’s anatomy
similar to humans?
Vocabulary
structure, function, cell, tissue, organ,
organ system, organism, nervous,
endocrine, respiratory, circulatory,
skeletal, muscular, digestive, endocrine,
reproductive, integumentary, anterior,
posterior, ventral, dorsal, amphibian
Name ______________________________
Date _______________________________
Objectives
1. Review the skills and vocabulary needed to
successfully dissect a frog.
2. Recognize major organs within each body system.
3. Explain the function of each body system.
Go to Web site http://www.mhhe.com/biosci/genbio/virtual_labs/BL_16/BL_16.html
Click on box labeled introduction.
Then Click on the box labeled Natural History.
Natural History
1. Frogs are vertebrates. All vertebrates have a _________________?
Scroll to the bottom of the page and click on the
2. The term amphibian means double life. What does this mean?
3. What are the two “lives” of a frog?
Scroll to the bottom of the page and click on the menu button, then click on the external box. As you
go along you will need to play the video and scroll to the bottom and press the next arrow
External Anatomy
4. What is the top side of the frog called? What is the bottom side of the frog called?
Top:
Bottom:
5. It is easy to tell a male and female frog apart? Explain.
6. Label the anterior and posterior of the frog.
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7. Why is the frog’s skin moist?
8. What is an advantage of the location of the frog’s eyes? How is this different from the location of
the human eyes?
9. What are tympanic membranes? What human organ are they similar to?
10. Why are forelimbs smaller and less muscular than the hind legs?
Scroll to the bottom of the page and click on the menu button, then click on the internal box. As you
go along you will need to play the video and scroll to the bottom and press the next arrow
Internal Anatomy
11. When dissecting the frog do you start with the ventral or dorsal side up?
Digestive System
Name at least 4 organs in the digestive system.
What is the job of the digestive system? _______________________________________________
Respiratory System
What organ connects the lungs to the mouth? _________________________
Frog’s use what two organs to exchange gases? Humans only use one of these organs.
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Reproductive System
What are the fat bodies for?
Describe how a frog reproduces. How is this different from humans?
Circulatory System
What are the 3 types of blood vessels?
A____________________
V____________________
C____________________
How many chambers are in a frog heart? ________________________
How many are in a human heart? ______________________
Why are they different?
Excretory System
What are the main structures in both the human and frog excretory system? ________________
How does liquid waste cleansed by the kidneys leave a frog’s body? ________________________.
What structure of the human body does this compare to? __________________________
Nervous System
Describe the frog’s nervous system:
How is a frog brain different form a human brain?
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Muscular System
What do muscles found in the frog’s upper leg move?
What do muscles found in the frog’s lower leg move?
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