What type of cells in the epidermis protect against UV rays?

Melanocytes are specialized cells located in the epidermis that play a crucial role in protecting the skin from ultraviolet (UV) radiation. These cells produce melanin, a pigment that absorbs UV rays and helps to prevent damage to the DNA in skin cells, which can lead to skin cancer and other skin disorders. The more melanin produced, the darker the skin, which provides greater protection against UV radiation.

Keratocytes, while important in the structure of the skin, primarily serve to provide a barrier and protect against environmental insults rather than specifically guarding against UV rays. Fibroblasts are connective tissue cells found in the dermis that are responsible for producing collagen and elastin, contributing to the skin's strength and elasticity but not directly involved in UV protection. Adipocytes, or fat cells, are primarily involved in energy storage and insulation rather than providing protection against UV radiation. Thus, melanocytes are specifically adapted for UV protection, making them the correct choice in this context.