1) Protect internal organs from injury. 2) Protect the body against bacteria and other pathogens. 3) Prevent the loss of too much water. 4) Regulate body temperature. 5) Respond to heat, cold, pain, pressure, and touch. 6) Excrete waste products in sweat. 7) Help with the production of Vitamin D. organ melanin protects sensation water epidermis dermis nerves F F T The integumentary system is an organ system consisting of the skin, hair, nails, oil glands, sweat glands, subcutaneous tissue, and nerve endings. T T T F Brown spots may occur if a person has been in the sun a lot during their lifetime. F I H E B D A G J C K T F in different ways F T T T Open wounds increase the risk of infection because breaks in the skin are a way for bacteria and other microorganisms to enter the body. T Non sterile dressings are applied to dry wounds that have less chance of infections. Sterile dressings are required when the woulnd is new, open, or draining. They are also required when there is a higher risk of infection. Examples of supplies that are considered sterile include sterile dressings, drapes, and pads. If any part of the sterile field becomes contaminated, the entire process must be restarted.