What is the composition of the skin primarily made of?

The composition of the skin is primarily made up of epithelial tissue, which serves as a protective barrier for the body. The skin consists of several layers, with the outermost layer known as the epidermis being predominantly composed of keratinized stratified squamous epithelium. This epithelial layer plays a crucial role in protecting underlying tissues from mechanical injury, pathogens, and dehydration, as well as in regulating temperature and sensation.

Epithelial tissue is essential for the skin's properties, such as its ability to regenerate rapidly and to form barriers. It also contains specialized cells that contribute to functions such as sensation (free nerve endings), immune responses (Langerhans cells), and moisture retention (sebaceous glands). Therefore, understanding the primary role of epithelial tissue helps in comprehending how skin functions as a vital organ in the body.