home
Menu
Create
Random
0
0
0

The Eye

Quiz
Quiz by JonSnow123
Rate:
Last updated: April 18, 2022
You have not attempted this quiz yet.
More quiz info >>
First submittedApril 18, 2022
Times taken1
Average score8.3%
Report this quizReport
Quiz and answer stats >>
Friends stats >>
10:00
Enter answer here
0
 / 12 guessed
The quiz is paused. You have remaining.
Scoring
You scored / = %
This beats or equals % of test takers also scored 100%
The average score is
Your high score is
Your fastest time is
Keep scrolling down for answers and more stats ...
Hint
Answer
What is the function of the cornea?
Refracts light into the eye
What is the function of the iris?
Controls how much light enters the pupil
What is the function of the lens?
Refracts light, focusing it onto the retina
What is the function of the retina?
The light sensitive part of the eye covered in receptors called rods and cones, which detect light
What is the function of the optic nerve?
Carries impulses from the recepetors to the brain
What is the function of the suspensory ligaments?
Alter the shape of the lens
Hint
Answer
What happens to the eye when it looks at a distant object?
The ciliary muscle relaxes, which allows the suspensory ligaments to pull tight. This pulls the lens into a less rounded shape so light is refracted less
What happens to the eye when it looks at a close object?
The ciliary muscle contracts, which slackens the suspensory ligaments. The lens becomes a more rounded shape, so light is refracted more
Why does long-sightedness occur?
The lens is the wrong shape and doesn't bend the light enough
How can long-sightedness be corrected?
Convex lens
Why does short-sightedness occur?
The lens is the wrong shape and bends the light too much
How can short-sightedness be corrected?
Concave lens
No comments yet
Save Your Progress

Copyright H Brothers Inc, 2008–2024

Contact Us | Go To Top | View Mobile Site