The First Step in the Nerve Action Potential from Rest

Question

The first step in the nerve action potential from rest is A) Opening of the fast Na⁺ activation gates B) Opening of the fast Na⁺ inactivation gates C) Closing of the K⁺ activation gates D) Opening of the K⁺ activation gates E) Hyperpolarization of the membrane

Accepted Answer

The first step in the nerve action potential from rest is the opening of the fast sodium (Na+) activation gates, allowing Na+ ions to rush into the neuron, which initiates depolarization.