How does your skin grow back when you get a cut or injury? How does your body know?
In: Biology
i don’t know how the body knows to do this but I do know how the skin repairs cuts. the skin actually does not “repair” anything, it replaces what was already there. A cut will not be closed directly. the lowest level of skin cells multiply and push up new layers just as they did without a cut, and the cut slowly disappears with new layers of skins filling up from the bottom. this is why even weeks after a cut is healed, your top layers of skin might still be damaged.
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