What is the outermost layer of the skin referred to as?

The outermost layer of the skin is referred to as the epidermis. This layer serves as the body’s primary barrier against environmental factors such as bacteria, UV radiation, and moisture loss. It is composed mainly of keratinocytes, which produce keratin, a protein that helps protect the skin. The epidermis is also responsible for the skin's overall appearance and plays a role in the production of melanin, which gives skin its color and helps protect against UV radiation.

In summary, the epidermis is crucial for providing protection and maintaining the health of the skin. Its composition and functions are essential for the overall integrity of the integumentary system.