Identify the key feature of the action potential that ensures it will travel only one direction. A)the activation state of the voltage-gated Na⁺ channel B)the inactivation state of the voltage-gated Na⁺ channel C)the activation state of the voltage-gated K⁺ channel D)the inactivation state of the voltage-gated K⁺ channel E)the temporary cessation in activity of the Na⁺/K⁺ pump

Question

Quizplus · Accepted Answer

The inactivation state of the voltage-gated Na⁺ channel ensures that the action potential travels only one direction. Once the channel has been activated and sodium ions have entered the cell, the channel becomes inactivated, preventing further sodium ions from entering the cell in the same location. This allows the action potential to move in one direction down the axon.

Identify the Key Feature of the Action Potential That Ensures