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Unit 2 Review

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

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

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