When Potassium Ion Channels Open, Which of the Following Occurs

question 35

Multiple Choice

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.

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