The Eye Flashcards
1
Q
What is the function of the cornea?
A
Refracts light
2
Q
What is the function of the iris?
A
Controls how much light enters the pupil
3
Q
What is the function of the lens?
A
Focuses light onto the retina
4
Q
What is the function of the retina?
A
Contains light receptors
5
Q
What is the optic nerve?
A
Connects the eye and the brain, carrying impulses
6
Q
What are rods and cones?
A
Light receptors within the retina
7
Q
Are rods or cones most sensitive?
A
Rods
8
Q
How many different types of cones are required to see colour?
A
3
9
Q
What does the reflex action do?
A
Limits the amount of light into the eye
10
Q
How does the pupil adjust to dim light?
A
Contracts
11
Q
How does the pupil adjust to bright light?
A
Expands
12
Q
What is the adjusting of the pupil to different light called?
A
Accommodation
