When sodium ions flow into the axon cytoplasm,
A) the membrane potential reverses.
B) the cytoplasm becomes more positively charged.
C) the interstitial fluid becomes more negatively charged.
D) an action potential is generated.
E) all of these things happen.

Question

Quizplus · Accepted Answer

When sodium ions flow into the axon cytoplasm, the membrane potential reverses, meaning the inside of the cell becomes more positively charged. This also causes the interstitial fluid outside the cell to become more negatively charged. These changes in charge ultimately lead to the generation of an action potential. Therefore, all of these things happen.

When Sodium Ions Flow into the Axon Cytoplasm