Mastering Action Potentials

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Questions and Answers

Which statement accurately describes the depolarization of the soma end of the axon?

  • The depolarization is prevented by the closing of K+ channels
  • The depolarization is caused by the inactivation of Na+ channels
  • The depolarization is inhibited by the opening of K+ channels
  • The depolarization is initiated by the opening of Na+ channels (correct)

What happens to the membrane during the depolarization of the soma end of the axon?

  • The membrane becomes hyperpolarized
  • The membrane repolarizes
  • The membrane depolarizes again (correct)
  • The membrane remains unchanged

What allows the action potential to continue traveling down the axon?

  • The repolarization of the membrane (correct)
  • The opening of K+ channels
  • The hyperpolarization of the membrane
  • The inactivation of Na+ channels

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