| A | B |
|---|
| What material covers the crown of a tooth? | enamel |
| What is a condition in which the lower and upper teeth do not meet properly? | malocclusion |
| How can you prevent tooth decay? | healthy diet, brushing, flossing, and wearing a mouthguard |
| What is an impacted wisdom tooth? | they do not have the space to emerge through the gum line or are positioned at an awkward angle |
| How does your skin help to regulate your body temperature? | sweat glands produce perspiration which cools your body, blood vessels widen or narrow to control the amount of heat being given off |
| How can keeping your nails smooth and clean help you stay healthy? | limit the spread of infection |
| What is the transparent structure that covers the front of the eye? | cornea |
| How do the iris and the pupil work together to control the amount of light entering the eye? | light comes through the pupil and the size of the pupil depends on the iris |
| What is astigmatism? | distorted vision from a uneven curvature on the corna or lens |
| What sleep disorder involves the inability to fall asleep or stay asleep? | insomni |
| What happens during NREM sleep? | normal rapid eye movement followed by deep relaxation |
| What happens during REM sleep? | rapid eye movement; high level of brain activity; dreams |
| What are some things you can do to help yourself get a good night's sleep? | regular bedtime and wake up time, avoid bright lights, avoid caffeine and sugar, exercise regularly, don't sleep with tv on, avoid all-nighters, don't nap near bed time |
| What substance covers a tooth's root? | Cementum |
| What is the living material that makes up the majority of the tooth? | dentn |
| What soft tissue fills the center of the tooth? | pulp |
| What is dandruff? | when epidermal cells of the scalp are shed at a faster rate than normal |
| What is the opening through which light enters the eye? | pupil |
| What is the circular structure that surrounds the pupol and regulates its size? | iris |
| What is a disorder when a person experiences severe sleepiness? | narcolepsy |
