Online teaching

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Unit 2 Review

Author: Torquato Rose
Keywords: , , , , , , online teaching

0. oil gland
1. fluoride
2. iris
3. nearsighted
4. optic nerve
5. sebum
6. decibel
7. astigmatism
8. SPF
9. gingivitis
10. orthodontia
11. plaque
12. farsighted
13. auditory nerve
14. hair follicle
15. ultraviolet rays

0. carries messages from the eye to the brain
1. gland that releases sebum and opens into a hair follicle
2. able to see things far away, but things nearby are blurry
3. sun protection factor
4. controls that amount of light that enters the eye
5. straightening crooked teeth
6. a mineral that can help protect teeth
7. gum disease
8. blurry vision caused by an unevenly curved cornea or lens
9. substance composed mostly of bacteria that builds up on teeth
10. the part of the skin that contains the root of a hair
11. able to see things nearby, but far away things are blurry
12. invisible energy waves given off by the sun
13. carries signals to the brain to be interpreted as sound
14. oil released by the oil (sebacious) gland
15. a unit used to measure the loudness of sound