If we accidentally cut our arm, several small blood vessels are cut apart.  In order to control the flow of blood from this vessels,   the physician has to control the bleeding by repairing the damaged nerve tissue by suturing it. Further, the doctor will apply disinfectant to avoid infection. Any infection to the damaged skin affects the ability to heal naturally. Redness and swelling are dangerous it leads to a more serious one, gangrene. That was the reason why any cut in the skin even how small it is should  be taken care of immediately.

It is a threat to anyone having diabetes that ends up with lost arms and legs. Taking antibiotics is one way of protecting infection. Constant dressing is necessary every day.  With the application of disinfectant it ensures the skin is clean and will starts healing.

The question is, how does it heal? It is a miracle in nature. The nerve fibers above the cut will begin to grow in its own time. Under some mysterious circumstances, each of the severed fibers started connecting again.

The body cells will continue and busy repairing the damaged skin and the tiny fibers will carefully thread their way to reach the spot of injury.

Our body has the ability to response to emergency. The cells will react to any disturbances to the skin and do whatever necessary to repair itself.