Action Potentials Extended Contents

  • Introduction: Sensing Pain
  • Section 1. Neurons Communicate
    Neurons rapidly transmit information over long distances in a series of electrical pulses called action potentials.
  • Section 2. Neurons and Electricity
    Membrane voltage changes in response to ions that move through special pores in the cell membrane called ion channels.
  • Section 3. Voltage-Gated Ion Channels
    The action potential is generated by the movement of sodium and potassium ions across the cell membrane through special voltage-gated ion channels.
  • Section 4. Action Potentials Challenge
    An experimental section for further exploration of action potentials.
  • Section 5. Graded Questions