Utah Master Esthetician Practice Exam

Which type of cell is primarily responsible for the production of collagen and elastin in the skin?

1. Keratinocyte

2. Fibroblast

3. Melanocyte

4. Macrophage

The correct answer is: Fibroblast

Fibroblasts are the primary cells responsible for the production of collagen and elastin in the skin, making them essential for maintaining the skin's structural integrity and elasticity. Collagen provides strength and support, while elastin allows the skin to stretch and return to its original shape. This production occurs in the dermis, where fibroblasts are located, and is crucial for skin health and resilience. While keratinocytes are involved in forming the outer barrier of the skin and play a role in the skin's overall function, they do not primarily produce collagen or elastin. Melanocytes, on the other hand, are responsible for producing melanin, which gives skin its color and protects against UV radiation, but they do not contribute to collagen or elastin production. Macrophages are immune cells that help in the body's defense against pathogens and debris in the skin but do not play a direct role in the synthesis of connective tissue proteins like collagen and elastin. This specialization of fibroblasts in producing these critical proteins highlights their importance in skin health and aging.