Fibroblast is a type of cell found just underneath the surface of the skin. Fibroblasts are part of the support structure for tissues and organs and play a crucial role in wound healing. They are responsible for the production of both the ground substance and of the precursors of collagen, elastic fibers, and reticular fibers. Fibroblasts are the commonest type of cells in the connective tissue of humans and other animals. They are long, flat, and star-shaped and lie close to collagen fibers.