2.2 complete regeneration:
Regeneration may be complete or incomplete.
(1) Complete regeneration: The new tissue is the same as the tissue that was lost. After the repair process has been completed, the structure and function of the injured tissue are completely normal. This type of regeneration is common in physiological situations. Examples of physiological regeneration are the continual replacement of cells of the skin and repair of the endometrium after menstruation. Complete regeneration can occur in pathological situations in tissues that have good regenerative capacity. An example is repair of a minor skin wound.
Conditions required for complete regeneration are:
① The necrotic parenchymal cells must have a strong ability to regenerate. [Parenchymal cells are the cells that give each organ its specialized function.] Examples of parenchymal cells that have a strong ability to regenerate are cells of the epidermis in the skin and epithelial cells of the liver.
② The damaged area is small and the stromal (connective tissue) framework of the injured tissue is well preserved.