Removal of the Frog’s Brain

frog-brainThe final day of the frog dissection allows for the opportunity for students to attempt to extract the frog’s brain.  This is a delicate operation and very few students can get the entire brain out in one piece, which exposes the cerebrum, cerebellum, optic, and olfactory lobes.  This worksheet provides instruction for removing the brain and an additional task to reveal the lower leg bones, which include the femur and the tibiofibula (fused tibia and fibula).   Students are offered extra credit for both tasks, which allows an extra day to be added to the frog dissection for some students to complete the dissection and other students who are finished have something to work on.   The sequence of the frog dissection is:

Day 1:  External Anatomy
Day 2:  Internal Anatomy
Day 3:  Remove brain

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HS-LS1-2 Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms

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