ELI5: how does your body heal itself. For example, hoes does your body heal itself from a cut?

cell replication. our skin cells are always multiplying because they are always dying (this is why skin will flake off even if you moisturize) as for how cuts heal its pretty simple. first it starts to bleed, which after being exposed to air, starts to clot up. (the cells dry and stick together. this causes a scab. after this the skin cells around it grow and multiply to cover the area of the scab. once the cells start to replicate and close in on the cut, the scab will start to be pushed off and the new skin will form underneath. If its a big cut, scar tissue will form to help protect the body from getting hurt in that same area again.

as for a proper ELI5, blood comes out and drys. skin cells make babies to help cover up your owie

[removed]

[removed]

In the blood are platelets, which are basically broken cell pieces that like to stick together. The cells in the blood vessel walls contain anti-clotting factor that prevent platelets from clumping together.

When you have an injury the vessel is broken and blood is exposed to cells beyond the vessel wall that do not have this anti-clotting factor. This triggers platelets to stick to those cells and then stick to each other. This forms a blood clot and stops the flow of blood. Then collogen proteins build off the cells by the wound and form fibers. This forms a sort of framework that surrounding cells and more fibers can build into to heal the wound. If the wound is small enough it can heal without forming a scar. But any wound more than a few cells wide would form some level of scar tissue.