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An absolute refractory period occurs during depolarization while the relative refractory period takes place during repolarization.

What is an action potential?

An action potential refers to a sudden, quick change in electrical potential (voltage) during the transmission of an impulse (signal) to a receptor, across a cellular membrane.

The order of events in the generation of an action potential include the following:

  • At -60 mV, graded depolarization transmits an area of excitable membrane to threshold.
  • At +30 mV, voltage-gated sodium channels are opened for sodium ions to move into the cell.
  • As repolarization begins, sodium channels close, voltage-gated potassium channels are opened for potassium ions to move out of the cell.
  • Finally, both sodium and potassium channels return to their normal states as the potassium channels is closed.

In conclusion, an absolute refractory period occurs during depolarization while the relative refractory period takes place during repolarization.

Read more on action potential here: https://brainly.com/question/6705448