When potassium ion channels open,which of the following occurs?
A) potassium ions flow into the axon cytoplasm
B) the axon cytoplasm becomes more positively charged
C) sodium ions diffuse into the axon cytoplasm
D) all of these occur
E) none of these occur

Question

Quizplus · Accepted Answer

When potassium ion channels open, potassium ions flow out of the axon cytoplasm, not into it, leading to the axon cytoplasm becoming more negatively charged, not positively. Sodium ions are not involved in this process.

When Potassium Ion Channels Open,which of the Following Occurs