The main ion channel responsible for the action potential is
A)the voltage-gated sodium channel.
B)the voltage-gated potassium channel.
C)the ligand-gated sodium channel.
D)the ligand-gated potassium channel.
E)the non-gated sodium channel.

Question

Quizplus · Accepted Answer

The voltage-gated sodium channel is responsible for the upstroke phase of the action potential, as it allows for a rapid influx of sodium ions into the cell when it is depolarized, causing the membrane potential to become more positive. The other options do not play as significant a role in generating the action potential.

The Main Ion Channel Responsible for the Action Potential Is