RT Book, Section A1 Ash, Rick A1 Morton, David A. A1 Scott, Sheryl A. SR Print(0) ID 1141045461 T1 SKIN T2 The Big Picture: Histology YR 2017 FD 2017 PB McGraw-Hill Medical PP New York, NY SN 9780071477581 LK accessphysiotherapy.mhmedical.com/content.aspx?aid=1141045461 RD 2024/04/20 AB Skin is the largest organ in the body, constituting approximately 16% of body weight. It forms an essential barrier between the organism and the external environment. A major function of skin, therefore, is protection (e.g., against desiccation, bacterial invasion, physical injury, and ultraviolet [UV] radiation). In addition, skin is important for thermoregulation, synthesis of vitamin D, and reception of sensory stimuli.