hygiene

2. the middle layer of skin which contains hair follicles
4. a spiral tube in the inner ear that senses sound vibrations and transmits them to the auditory nerve
6. small insects that attach to hair and feed on human blood
8. a skin condition in which inflamed or clogged hair follicles cause pimples
9. an invisible type of radiation that emanates from the sun
12. the clear tissue covering the front of the eye
13. the units by which sound intensity or loudness is measured
14. a chronic skin condition characterized by patches of red itchy dry or swollen skin
16. the innermost light-sensitive area of the eye
18. an inflammation of the gums
19. an infection in which bacteria gets beneath the gums and destroys gum and bone
21. dead skin that flakes off the scalp due to dryness infrequent shampooing or irritation
22. holes in the teeth caused by plaque eating away at tooth enamel
23. the black opening in the middle of the iris through which light passes

1. a substance produced in the mouth which contains enzymes that break down food
3. a product that protects the skin
5. the innermost layer of skin which contains fat blood vessels and nerve endings
7. the outermost layer of skin which protects the body from foreign substances and contains pigment-producing cells
8. a product designed to stop or dry up sweat
10. a product designed to cover up body odor
11. the condition of having bad-smelling breath
15. the part of the middle ear that vibrates in response to sound
17. the colored part of the eye that constricts and dilates the pupil
19. hair follicles underneath your skin that contain oil-producing glands
20. a sticky colorless substance formed by bacteria in the mouth
24. a clear part of the eye that focuses light on the retina