So let's begin by looking at the following diagram that describes a cube region of our skin. Now notice that the skin consists of three different sections. We can divide the skin into three different regions. The outermost section of the skin is known as the epidermis. The middle portion is known as the dermis, and the lowest portion is known as the hypodermis, or the subcutaneous layer. Now let's begin by discussing the epidermis, the outermost portion of the skin.