Wound Healing
Wound healing demonstrates the regenerative powers of epidermal tissue. The trauma may be extensive enough to open the blood vessels in the dermis. If so, the blood clot that forms is gradually converted to a scab. In the meantime, the basal layer of the epidermis begins to produce new cells at a faster than usual rate. Eventually, the wound fills in, but if the wound is deep, scarring is likely. A scar is tissue composed of many collagenous fibers arranged so as to provide maximum strength. A scar does not contain the accessory organs of the skin and is usually devoid of feeling.
The skin has regenerative powers and can grow back on its own if a wound is not too extensive.
