This student guide (dissection manual) walks students through the frog dissection. Each step has a check box to help students focus and stay on track. Detailed descriptions of structures will help students locate organs with minimal help from the instructor. Specimens can be ordered from biological supply companies or through Amazon.
This handout provides detailed instructions on how to identify structures, starting with the external anatomy, the anatomy of the mouth, and then followed by the opening of the abdominal cavity to reveal the organs.
Students will also label diagrams of the mouth, the abdominal cavity, and the urogenital system of both the male and the female frog. A set of questions at the end of the activity can be used to check for understanding.
As an extension activity, students can remove the brain of the frog and reveal the bones of the hindlimb. The “Brain and Bones” worksheet is usually given as an optional task for students who complete the dissection quickly.
Grade Level: 8-12 | Time Required: 1 – 1.5 hours
HS-LS1-2 Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms
Frog External Anatomy – just covers the external anatomy and the mouth, useful if you wanted to split the dissection into separate lessons
Frog Internal Anatomy – covers only the internal anatomy, useful for splitting the dissection of if you are short on time and want to skip the external anatomy
Frog Brain and Bones – an extra task for students who finish the dissection early, remove the brain of the frog and expose the femur.
Ultimate Frog Anatomy Review – links to photos, quizzes, and other materials to help students prepare for a labe practical on the frog.