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