Wound Care Certified Certification (WCC) Practice Exam

Which skin cell type is responsible for protecting against harmful UV radiation?

1. Keratinocyte

2. Melanocyte

3. Fibroblast

4. Adipocyte

The correct answer is: Melanocyte

The melanocyte is the skin cell type responsible for protecting against harmful ultraviolet (UV) radiation. Melanocytes produce melanin, a pigment that absorbs UV radiation from sunlight. This absorption helps to prevent DNA damage in skin cells, which can lead to skin cancer. The amount and type of melanin produced determine the level of protection offered, with individuals who have darker skin generally having more melanin and, consequently, better natural protection against UV radiation. In the context of skin health and wound care, understanding the role of melanocytes is crucial, as protection against UV exposure helps prevent further complications and damage to the skin, particularly in wounds that may be exposed to the sun. While keratinocytes also play a significant role in the skin's barrier function and overall integrity, it is the melanocytes that specifically counteract UV radiation through melanin production. Fibroblasts are involved in the formation of connective tissue and healing, while adipocytes store fat and affect skin texture and insulation, rather than directly protecting against UV rays.