Which layer of skin is referred to as the outer layer?

The epidermis is indeed referred to as the outer layer of the skin. It serves as the first line of defense against environmental factors such as pathogens, UV radiation, and physical abrasions. Composed mainly of keratinized stratified squamous epithelium, the epidermis provides protection while also playing a crucial role in regulating moisture and preventing excessive water loss. The outermost part of the epidermis consists of dead skin cells that continuously shed and are replaced, showcasing the skin's dynamic nature. This layer is also responsible for producing melanin, which gives skin its color and protects against sun damage. Understanding the function and structure of the epidermis is essential for comprehending overall skin health and its protective capabilities.