What do fibroblasts primarily produce in the skin?

Fibroblasts are specialized cells found in the connective tissue of the skin, and their primary function is to produce collagen and elastin. These proteins play a crucial role in 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. Together, they are essential for wound healing, providing structure to the skin, and overall skin firmness and resilience.

In contrast, other options such as melanin, keratin, and sebum are produced by different cells or structures in the skin. Melanin is produced by melanocytes and is responsible for skin pigmentation. Keratin is produced by keratinocytes and is a key structural protein in the outer layer of the skin, contributing to its barrier function. Sebum, an oily substance, is produced by sebaceous glands and helps to lubricate and protect the skin. Understanding the roles of these various components highlights the specific and vital function of fibroblasts in maintaining the overall health and appearance of the skin.