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Axon Essay Topics & Paper Examples

Neurophysiology of Nerve Impulses

1.Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. If the extracellular K+ increases then the concentration of intracellular K+ will decrease causing a decrease in the steepness of the concentration gradient and fewer K+ ions would be drawn out. 2.Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. How well did the results compare with your prediction? If extracellular K+ is increased then the intracellular K+ will decrease. Fewer intracellular K+ ions would result in the membrane potential being less negative. The results of my prediction were the same. 3.Explain why a change in extracellular Na+ did not alter the membrane…