Washington Esthetician State Board Practice Exam

What type of cells are primarily involved in the hyperproduction during skin healing?

1. Melanocytes

2. Keratinocytes

3. Fibroblasts

4. Adipocytes

The correct answer is: Keratinocytes

In the context of skin healing, keratinocytes play a crucial role in the process of re-epithelialization, which is essential for restoring the protective barrier of the skin after an injury. These cells are the predominant cell type found in the epidermis, the outermost layer of the skin. During the healing process, keratinocytes proliferate and migrate to cover the wound, contributing to the formation of new skin. Increased production of keratinocytes is often necessary to replace those that are lost or damaged during skin injuries, such as cuts, abrasions, or burns. This hyperproduction is vital for ensuring that the skin recovers its integrity and function effectively. While melanocytes are responsible for pigment production, fibroblasts are involved in producing collagen and other extracellular matrix components to support skin structure, and adipocytes are fat cells that primarily store energy. Their roles are crucial in skin health and healing, but they do not primarily govern the hyperproduction characteristic of the initial wound healing phase. Thus, the primary focus during skin healing is on the rapid proliferation of keratinocytes to restore the epidermal barrier.