Question

multiple choice question
as an action potential occurs in one area of the axon, an electrical current to neighboring areas of the membrane initiates

another action potential
hyperpolarization of the membrane
a graded potential

Explanation:

When an action potential occurs in one area of the axon, the electrical current spreads to neighboring areas. Action potentials are all - or - none events. The depolarization caused by the local current in the neighboring membrane regions reaches the threshold potential, which then initiates another action potential. Graded potentials are smaller, variable - amplitude potentials that do not propagate in the same all - or - none, regenerative way as action potentials. Hyperpolarization is a phase of the action potential (after - hyperpolarization) but is not initiated in the neighboring regions in the way described; rather, the neighboring regions are depolarized to initiate new action potentials.

Answer:

another action potential