What is a scab?

The video explains what a scab is and how it forms. It begins with an introduction to scabs, followed by a detailed look at blood under a microscope, highlighting the roles of red blood cells, white blood cells, and platelets. The video then describes how platelets help form a scab to stop bleeding and protect the wound, allowing new skin cells to grow and heal the cut. Once healed, the scab falls off, completing the healing process.

What new insight or understanding did you gain from this video?