Where are pigment granules produced?

Pigment granules, specifically melanin, are produced by melanocytes, which are specialized cells located primarily in the basal layer of the epidermis. These cells play a crucial role in determining skin color and protecting the skin from ultraviolet (UV) radiation by absorbing sunlight. The process of melanin production is known as melanogenesis.

Keratinocytes, while important for skin structure and function, do not produce pigment granules. Instead, they are more involved in keratin production, which contributes to the skin’s barrier and protective properties. Fibroblasts are located in the dermis and are primarily responsible for producing collagen and elastin, which provide the skin with strength and elasticity, rather than pigment granules. Epidermal cells, which include keratinocytes and other skin cell types, also do not generate pigment granules.

Thus, understanding the specific role of melanocytes is critical for comprehending how skin pigmentation occurs and how it may be affected by various factors, including genetics and sun exposure.