How a wound heals itself - Sarthak Sinha

View full lesson: http://ed.ted.com/lessons/how-a-wound... Our skin is the largest organ in our bodies, with a surface area of about 20 square feet in adults. When we are cut or wounded, our skin begins to repair itself through a complex, well-coordinated process. Sarthak Sinha takes us past the epidermis and into the dermis to investigate this regenerative response. Lesson by Sarthak Sinha, animation by Karrot Animation.