What Is the Function of Stratum Basale?

Stratum basale is the deepest of the five layers of the epidermis. The stratum basale is a continuous layer of cells, usually only one cell thick, that is layered directly above the dermis. It is primarily made up of basal keratinocytes, the stem cells of the epidermis. The primary function of keratinocytes is to divide and migrate superficially to the stratum spinosum, the next of the five epidermal layers.