Name: ______Date: ______Pd.____

Virtual Frog Dissection

Introduction: In this lab you will be participating in an online dissection of a frog. Dissections have long been a major topic in life science classes because they allow students to see firsthand the internal structures of living things and actually interact with them. However, sometimes the personal feelings of students and teachers about dissection get in the way of the experience. Rather than force students to participate, virtual frog dissections have been developed so that everyone can experience the amazement and complexity of living things.

Purpose: The purpose of this lab is to first observe and interact with the anatomy of a frog without harming a living frog. And also, to compare and contrast the structures found in a frog to that of other animals, including humans.

Materials Needed: Laptop with internet access and flash capabilities.

Procedure:

  1. Go to http://froguts.com/flash_content/index.html. In the top right hand corner, click “demo”, then click “begin”.
  2. Once the demo starts, click on the small arrow to the right of the blue display screen at the bottom of the page. This will display a set of controls so you can pause, rewind, or skip forward in the demo. There is also a “full screen” option which will help you read the instructions and get a better look at the frog. The demo will include two stages; an external observation stage and an internal observation stage.
  3. Answer the external observation questions below. Be sure to follow the directions displayed at the bottom of the screen to continue the external observation stage.
  4. When the internal dissection and observation begins, take note of each tool used and how it was used in question 5.
  5. In question 6, list and describe the function of the organs indentified in the dissection stage.

External Observation Questions

1. Frogs are part of the phylum Chordata and the class Amphibia, which also includes what other animals?

a. ______

b. ______

c. ______

2. What is the scientific name of the common Bullfrog you are dissecting? ______

3. How much of the frogs daily oxygen comes from its skin? ______

4. What features did you examine during the external observation phase?

a. ______

b. ______

c. ______

d. ______

Internal Observation Questions

5. As you use tools during the dissection, list them here and what you used them for.

a. ______--______

b. ______--______

c. ______--______


d. ______--______

6. List and then briefly describe (in full sentences) the function of each organ identified in the dissection stage of the demo.

a. ______-- ______

______

b. ______-- ______

______

c. ______-- ______

______

d. ______-- ______

______

e. ______-- ______

______

f. ______-- ______

______

g. ______-- ______

______

h. ______-- ______

______