Module 4 A toxin causes voltage-gated K⁺ channels in motor n…
Module 4 A toxin causes voltage-gated K⁺ channels in motor neurons to remain open longer than normal after an action potential. Using this scenario, analyze how altered ion-channel function affects neuronal signaling. In your response: Predict how this will affect repolarization and hyperpolarization. (6 points) Predict how it will affect the neuron’s ability to reach threshold and generate another action potential. (4 points) Explain why the sodium–potassium pump might not be able to compensate for the abnormal K⁺-channel activity. (6 points) Predict how this disruption could affect skeletal-muscle activation. (4 points)