green frog

Alternatives to the Frog Dissection

Objective: Students who cannot perform the actual frog dissection can use this alternative to learn the parts of the frog and receive credit for the dissection. Keep in mind, there is no substitute for actually viewing the real structures on the frog and having the real experience of dissection. Many students will remember the frog dissection long after they have left school. However, it is understood that some students opt out for moral reasons, or some cannot complete the dissection due to health reasons. This project has three parts, to be completed by the student on their own time, using a computer and an internet connection.

Artifacts You Must Turn in for Full Credit

frogPart I - Dissection of the Frog without the Frog

There are many simulations available online, and your first step is to complete two virtual dissections.

Site 1 - Go to MHHE Virtual Frog Dissection and complete the module. This site requires flash and may not work on all computers.

To show that you have completed the dissections, answer the following questions, you will turn these questions in to your teacher.

1. Describe the procedure you would use to cut the frog to expose the organs to view. You may include drawings to explain the technique.

2. Describe the inside of the frog's mouth. What structures are visible and what are their functions? You may also include drawings.

3. Describe what you first see when you open the body cavity of the frog. What organs are obvious? Which organs may require a more thorough inspection?

4. Compare a male to a female frog. How can you tell the difference?

5. Choose one organ that you would find in the body cavity of the frog. Describe it in thorough detail, explain what it does, where it is located and how you would find it in the frog, you may want to sketch the organ to show its locations in relation to the other organs.

frogPart II - Completing the Lab Guides

Students in class were required to follow a lab guide, follow the instructions and answer questions. This is still a requirement for those not actually in class and working on the frog. Print the following handouts (or your teacher may have given them to you already.)

Frog External Anatomy | Frog Dissection | Frog Brain and Leg Dissection

Follow the handouts as you view each gallery and walkthrough.

Gallery and Walkthroughs

External Anatomy

Dissection of the Frog

Brain Dissection

Leg Dissection

Part III - Preparation for the Lab Test

Students in class will be taking a test over the frog where they will need to identify structures on a dissected and pinned frog.

You will either be doing this with the class or taking the online version of the lab test - see your instructor for details.

To prepare for the test, visit the Ultimate Frog Anatomy Review for practice tests.

Print out a copy of the frog labeling review guides to complete and turn in to your instructor.