When potassium ion channels open, which of the following occurs?
A)potassium ions flow into the axon cytoplasm
B)the axon cytoplasm becomes more negatively charged
C)sodium ions diffuse into the axon cytoplasm
D)the threshold potential is reached
E)more sodium channels open

Question

Quizplus · Accepted Answer

When potassium ion channels open, potassium ions flow out of the axon cytoplasm, making the inside of the axon more negatively charged.

When Potassium Ion Channels Open, Which of the Following Occurs