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