See It · The Integumentary System

Skin Layers Walkthrough

Follow one skin cell from birth to shedding, then see how skin makes color and vitamin D. 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. Content follows OpenStax Anatomy & Physiology 2e, Chapter 5. Diagrams are simplified and not to scale: fewer cell layers are drawn than real skin has, and the vitamin D chemistry is shown in a simplified form.