Final answer:
The stratum basale is in a constant state of mitosis and is responsible for the continuous renewal of the epidermis.
Step-by-step explanation:
The stratum basale is in a constant state of mitosis. It is the innermost layer of the epidermis, and it contains stem cells called basal cells that divide to form all the keratinocytes of the epidermis. The stratum basale is responsible for the continuous renewal of the epidermis. The stratum basale is the layer of the epidermis in a constant state of mitosis. This single layer of cells contains basal cells, which are stem cells responsible for producing new keratinocytes, the most prevalent cell type in the epidermis. The continuous division of these basal cells replenishes the skin and contributes to its regeneration. The stratum basale is found at the deepest part of the epidermis and is attached to the dermis via the basement membrane. It is the site of constant cellular division, which allows for the renewal of the skin's surface. The stratum spinosum, located just above the stratum basale, contains keratinocytes that are beginning to synthesize keratin. Additionally, this layer hosts Langerhans cells, which serve an immunological function. However, it is the stratum basale that is actively engaged in mitosis, not the stratum spinosum.