How does your body know when a wound is fully healed and when to stop healing?
In: Biology
When blood is coming out of a wound, it just dries up, creating a seal over the wound until the skin under it has grown back (and skin is always reproducing itself, you just don’t notice).
Your blood also has cells in it that help battle infection and viruses, like white blood cells and antibodies. Those are always in the blood and do basically nothing until they come across a bacteria or virus that shouldn’t be there. There is a reaction that should kill the intruder. Once the intruder is killed, there is nothing left to cause a reaction, so everything just turns back to normal.
You body really doesn’t control any of that. The only thing it does do is making sure that there are enough cells and antibodies.
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