Skin Is the Biggest Organ of the Human Body

When people think of organs they usually think of the heart or the lungs, but the largest one is on the outside. A teaching resource from the National Institute of Arthritis and Musculoskeletal and Skin Diseases, part of the US National Institutes of Health, states that skin is the biggest organ of your body. It explains that an organ is a part of the body that has a specific job, and skin has several. It covers and protects you, fights dangerous germs and stops them from getting inside the body, and makes melanin, the molecule that gives skin its color. Skin is organized into three main layers. The epidermis is the part you can see, and at the bottom of it new skin cells form to replace old ones that flake off.