1. outer layer of skin that is responsible for the production of melanin and keratin cochlea 2. a protein substance necessary for healthy skin, hair, and nails keratin 3. the inner layer of skin that contains hair follicles, blood vessels, and sebaceous glands wax 4. the result of sebum being trapped in a follicle with a piece of dirt or bacteria dermis 5. the results of sweat being allowed to sit on bacteria-crowded areas of the skin washing 6. the best means of prevention for body odor and acne body odor 7. a thin membrane, dividing the outer ear from the middle ear, which moves the ossicles epidermis 8. channels sound to the eardrum ossicles 9. protects the eardrum from dirt acne 10. small bones in the middle ear that transfer sound waves to the inner ear ear plugs 11. converts sound waves into electrochemical impulses, which are transmitted to the brain earache 12. caused by sinus infection or another illness affecting the nose or mouth ear drops 13. a safe treatment for wax build-up ear canal 14. appropriate protection from loud noises eardrum