It regrows to the exact size it was, no extra skin no less skin. Unless of course it’s a serious injury but I’m talking minor skin removal. Obviously gunshot wounds, flesh eating bacteria and animal bites don’t do this because of scar tissue I assume but even with them it’s remarkable how close it comes to filling in the area. How does the body know when to stop growing the new tissue to fill it in and how come with these deeper wounds the body has a harder time figuring it out?
In: Biology
Each layer of your limb that got cut will reconstruct until the injury is gapped over. It’s possible to do with small injuries because the multiple layers (muscle, fat, dermis and epidermis) all take care of themselves. Larger injuries may have certain layers not heal entirely before another does, leaving indents or disfigurement. Bone obviously does not regenerate when severed, although the layers of fat and skin can still typically regenerate around it.
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