Soft tissues include layers of skin, fatty tissue, and muscle that protect The deeper located sections are protected. The skin itself is the most widespread organ of the body. It serves as protection for the body, regulates body temperature and acts as a tactile organ due to the nerve endings located in it. The skin has two layers. The outer layer of skin, the epidermis, serves as a barrier to germs that cause infection. The deeper layer, the dermis, contains nerves, sweat and oil glands, and numerous blood vessels. Most soft tissue injuries are painful and most often accompanied by bleeding. There is a layer of fat under the skin. It helps maintain a constant body temperature. Muscles are located under the fat layer. The skin also produces vitamin D and deposits minerals. In people with fair skin, color helps determine health status. When blood circulates close to the surface of the skin, it appears pink and feels warm to the touch. But when the flow of blood to the surface of the skin is disrupted, as in a state of shock, the skin becomes pale and cold. Such changes are difficult to detect in people with dark skin color. Most soft tissue injuries involve the outer layers. But with a strong external impact, damage to all layers of soft tissue is possible.