What groove divides cerebrum into two hemispheres

Q1. Action potentials are usually generated at axon hillock and propagated down axon away from the cell body. If you experimentally depolarized an axon to the threshold level at a point halfway down the axon, what would happen?

Q2. The patient has the fracture where end of the left upper arm bone closer to the elbow is protruding through the skin. How would you explain this fracture? Give the name of the fracture and location also.

Q3. What is the benefit of having a cerebrum that is highly convoluted? What is the term used to indicate its grooves? Its outward folds? What groove divides cerebrum into two hemispheres?

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