Question

bio - 201 topic 2: cell physiology & tissues
practice it
what type of ion channels are responsible for the flow of ions in and out of the cell during the initiation of an action potential?
mechanically - gated ion channels
ligand - gated ion channels
gap junction channels
voltage - gated ion channels
nuclear ion channels

Explanation:

During the initiation of an action potential, voltage - gated ion channels open and close in response to changes in membrane potential, allowing the flow of ions (such as sodium and potassium) in and out of the cell. Mechanically - gated ion channels respond to mechanical stimuli, ligand - gated ion channels to chemical ligands, gap junction channels are for inter - cellular communication, and nuclear ion channels are not involved in action potential initiation.

Answer:

Voltage - gated ion channels