In the first phase of triggering an action potential in a neuron,Na⁺ ions flow in and A) only trigger a negative feedback loop. B) only trigger a positive feedback loop. C) only activate the sodium/potassium pump. D) trigger a negative feedback loop and activate the sodium/potassium pump. E) trigger a positive feedback loop and activate the sodium/potassium pump.

Question

Quizplus · Accepted Answer

Na+ ions flowing in triggers a positive feedback loop, which leads to the opening of more Na+ channels and further depolarization.

In the First Phase of Triggering an Action Potential in a Neuron,Na+

In the First Phase of Triggering an Action Potential in a Neuron,Na⁺