Wounds and Scars
An open wound is an injury in which skin is torn, cut, or punctured. To heal a wound, the human body undertakes a series of actions collectively known as the wound healing process. Scars are areas of fibrous tissue that replace normal skin after injury. A scar results from the biological process of wound repair in the skin. All scarring is composed of the same collagen as the tissue it has replaced, but the composition of the scar tissue, compared to the normal tissue, is different.