Get smart curated videos delivered to your inbox every week.      
The Kid Should See This

How do wounds heal? How do scars form?

What happens when we get cut and bleed? How does skin scab over and heal? And why does skin scar? These two TED-Ed videos from MD-PhD candidate Sarthak Sinha go deep under our skin to give us a better understanding of how our bodies work to protect us.

First, explore the epidermis, dermis, and the four stages of the regenerative process—hemostasis, vasoconstriction, inflammation, and phagocytosis: How a wound heals itself.

dermis

What is a scar? And where else in the body can scars or fibrotic scarring form beyond your skin? Then learn how scars form in this video:


Related exploration: Tissue Regeneration in Animals at HHMI Biointeractive.

Watch more videos about bodies of all kinds, human health, and our skin, including:
• Skin healing: A 33-day time-lapse in 10 seconds
• Why are your fingerprints unique?
• Lupita Nyong’o Loves Her Skin

This award-winning video collection is reader-supported. Become a sustaining member to keep TKSST online and free for everyone, including teachers and parents who use it as a resource to spark learning and curiosity for kids.