The action potential spreads through an axon by:
A)Depolarizing adjacent membrane to threshold,triggering another action potential
B)Inflow of potassium ions and outflow of sodium ions
C)A non-decremental of graded potential
D)A decremental of graded potential

Question

Quizplus · Accepted Answer

The action potential is propagated down the axon by depolarizing adjacent membranes to threshold, triggering another action potential. As the action potential reaches the next section of the axon membrane, it triggers the opening of voltage-gated ion channels, which allow ions to flow across the membrane to depolarize it to threshold and cause another action potential to occur. This process continues down the length of the axon, allowing the action potential to propagate forward.

The Action Potential Spreads Through an Axon By