12.1k views
3 votes
In the propagation of the action potential, what provides the stimulus to open the next channel?

1 Answer

3 votes

Final answer:

In the propagation of the action potential, the depolarization of the membrane provides the stimulus to open the next channel.

Step-by-step explanation:

In the propagation of the action potential, the stimulus to open the next channel is provided by the depolarization of the membrane.

Once the membrane reaches the threshold voltage of -55 mV, voltage-gated Na+ channels open and allow the entry of sodium ions into the cell. This causes further depolarization and initiates the action potential.

User Alice Chan
by
7.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.