See It · Nervous Tissue

Action Potential Walkthrough

How a neuron makes and sends an electrical signal, one step at a time. Go at your own pace. Nothing here is graded.

Speed

Think of it like this

Quick check

Wrong answers are fine here. Read why, then try again.

Dr. Akash Garg · See It: Anatomy & Physiology · Use the left and right arrow keys to move between steps. Pair this with the Neuron Lab. Values follow OpenStax Anatomy & Physiology 2e. Diagrams are simplified and not to scale: ion numbers, channel counts, graded-potential sizes and conduction speeds are exaggerated so you can see them.