<unk> , or<unk>  repair, is the body's natural process of regenerating dermal and epidermal tissue.  When an individual is<unk> ed, a set of events takes place in a predictable fashion to repair the damage.  These events overlap in time and must be artificially categorized into separate steps: the inflammatory, proliferative, and remodeling phases (Some authors consider<unk>  to take place in four stages, by splitting different parts inflammation or proliferation into separate steps.). 
In the inflammatory phase, bacteria and debris are phagocytized and removed and factors are released that cause the migration and division of cells involved in the proliferative phase.
The proliferative phase is characterized by angiogenesis, collagen deposition, granulation tissue formation, epithelialization, and<unk>  contraction.  In angiogenesis, new blood vessels grow from endothelial cells.  
In fibroplasia and granulation tissue formation, fibroblasts grow and form a new, provisional extracellular matrix (ECM) by excreting collagen and fibronectin.
In epithelialization, epithelial cells crawl across the<unk>  bed to cover it.  In contraction, the<unk>  is made smaller by the action of myofibroblasts, which establish a grip on the<unk>  edges and contract themselves using a mechanism similar to that in smooth muscle cells.  When the cells' roles are close to complete, unneeded cells undergo apoptosis.
In the maturation and remodeling phase, collagen is remodeled and realigned along tension lines and cells that are no longer needed are removed by apoptosis.
Wound healing
Heat transfer
Hemostasis
Coagulation
Bleeding 
Bleeding
Swelling 
Limb development