Integumentary is a term that refers to the protective covering of the body, including skin, hair, nails, and glands. Synonyms for this term include dermal, cutaneous, epidermal, and epidermic, all of which describe the outermost layer of the body. Other related terms include integument, exterior, and outer covering, which also refer to the protective layers of the body. These terms are often used in anatomy and physiology to describe the functions and structures of the skin and other protective layers, and they are important in understanding how the body is protected from environmental factors such as heat, cold, and disease.