| A | B |
|---|
| Fluoride | A substance that helps prevent tooth decay |
| Plaque | Thin sticky film that builds up on teeth and contributes to tooth decay |
| Tartar | Is hardened plaque that threatens gum health |
| Epidermis | The outermost layer of the skin |
| Melanin | The substance that gives skin its color |
| Pores | Tiny openings in the skin |
| Follicles | Small openings or sacs in the dermis that produce hair |
| Ultraviolet (UV) Rays | Are an invisible form of radiation from the sun that can penetrate and change the structure of skin cells. |
| Dandruff | A flaking of the outer layer of dead skin cells on the scalp |
| Head Lice | Parasitic insects that live on the hair shaft and cause itching |
| Optometrist | Health care professional who is trained to examine the eyes for vision problems and to prescribe corrective lenses |
| Astigmatism | An eye condition in which images are distorted causing objects to appear wavy or blurry |
| Decibel | The unit of measuring the loudness of sound |
