Opening of Sodium Channels in the Axon Membrane Causes

Question

Opening of sodium channels in the axon membrane causes
A) depolarization.
B) repolarization.
C) hyperpolarization.
D) increased negative charge inside the membrane.
E) inhibition.

Accepted Answer

Opening of sodium channels in the axon membrane causes depolarization, which means the inside of the membrane becomes more positive compared to the outside. This leads to the generation of an action potential that can propagate along the length of the axon. Repolarization and hyperpolarization occur after depolarization, as part of the process of returning the membrane potential to its resting state. Increased negative charge inside the membrane and inhibition are not a direct result of sodium channel opening.