Steps of tissue repair of a superficial wound

1.) Inflammation sets the stage. Inflammatory chemicals are released. This causes blood vessels to dilate and become more permeable, allowing white blood cells and plasma fluid rich in clotting proteins to invade the wound. The surface dries and a scab is formed.

2.) Next, organization restores the blood supply. Organization is the first step of tissue repair. During this phase, granulation tissue is formed. The granulation tissue is sensitive pink tissue made up of multiple elements. Capillary buds invade the clot, restoring a vascular supply. As the organization prices continues, macrophages digest the original clot and collage fiber deposit continues.

3.) Regeneration and fibrosis effect permanent repair. After about one week, the surface epithelium begins to regenerate, growing under the scab, that will soon detach. The regenerating epithelium thickens until it finally resembles that of the adjacent skin. Finally, the result is a full healed epithelium, and an underlying area of scar tissue.