In the process of continuous propagation,all of the following are true except A)the action potential is triggered by graded depolarization of the initial segment. B)at threshold,sodium channels begin to open rapidly. C)local currents depolarize the region just adjacent to the active zone. D)depolarization of the axonal membrane only occurs at nodes. E)each step takes about one millisecond.

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Quizplus · Accepted Answer

Depolarization occurs along the entire length of the axonal membrane during continuous propagation, not just at the nodes. Nodes of Ranvier are where action potentials are regenerated, but they are not the only site of depolarization in the process of continuous propagation.

In the Process of Continuous Propagation,all of the Following Are