In the Sequence of Permeability Changes for a Complete Action

question 25

Multiple Choice

In the sequence of permeability changes for a complete action potential, the first of these events that occurs is the ________.

• A) activation of the sodium-potassium pump
• B) inhibition of the sodium-potassium pump
• C) opening of voltage-gated sodium channels
• D) closing of voltage-gated potassium channels
• E) opening of voltage-gated potassium channels