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Dissection Preparation

One reason frogs are often chosen to be dissected is that their bodies provide a good overview of the organ systems of a complex living thing. The organs present in a frog, and the way they are laid out in the body, are similar enough to humans to provide insight for students about how their bodies work. Frogs and humans each possess a circulatory system. A difference though is that frogs have a three-chambered heart, with two atria and one ventricle compared to the human’s two atria and two ventricles. Other similarities between frogs and humans are the digestive and respiratory systems.

Lesson 1 (or “Day 1”) Material
Lesson 2 (or “Day 2”) Material
Lesson 3 (or “Day 3”) Material
Lesson 4 (or “Day 4”) Material


5:10 Earthworm: nervous system

3:32 Frog Dissection Part 1

4:56 Morphology and Digestive System of Frog 512 1

Resources Documents and Links


Compare Contrast and Debate


Resources Documents and Links

Special Notes and Notices

Instructor Emphasis:

  • Science & Engineering Practice: Plan and conduct investigations.
  • Cross-Cutting Concept: Structure and Function.

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