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A rapid change in the membrane potential of excitable cells such as neurons and muscles; this usually involves a steep rise (depolarization) followed by a steep fall in membrane potential (repolarization). The cell subsequently enters a short refractory period (hyperpolarized state) during which it cannot generate another action potential.
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Purpose of K+ channels in action potential
I understand that they serve to repolarize the neuron after the Na+ influx. What I don't understand is why this is important.
Meaning, let's say all the K+ channels disappeared. So now the potentia …