A. Your leg jumping when it is hit by a reflex hammer
<span>In a neuron, the opening of sodium gates typically leads to open and allows the exit of sodium ions out the cell. The neuron that contains for why myelinated fibers conduct signals faster than unmyelinated fbers are the d</span>iffusion of ions along the axoplasm is faster. At the same time, a traveling wave of excitation is <span>a nerve signal.</span>
I believe the answer is PREZYGOTIC isolating mechanisms
First is the second and the other one is the 4th