The term 'body covering' can be summarized as the SKIN, which is a four-letter word. SKIN is the largest organ of the human body and is composed of multiple layers. It serves as a protective barrier against environmental factors such as bacteria, viruses, and other pathogens. It also helps regulate body temperature and provides sensation. SKIN is made up of two main layers: the epidermis and the dermis. The epidermis is the outermost layer and is composed of dead cells that are constantly being shed and replaced. The dermis is the inner layer and contains blood vessels, nerve endings, sweat glands, and hair follicles.