The Control of Light Entering the Eye Flashcards
1
Q
In bright light:
Photoreceptor cells in retina
A
Many are stimulated
2
Q
In bright light:
Sensory neurones to the brain
A
More impulses
3
Q
In bright light:
Circular muscles
A
Contract
4
Q
In bright light:
Radial muscles
A
Relax
5
Q
In bright light:
Pupil
A
Constricts/gets smaller
6
Q
In bright light:
Light entering the eye
A
Reduced
7
Q
In dim light:
Photoreceptor cells in retina
A
Fewer are stimulated
8
Q
In dim light:
Sensory neurones to the brain
A
Fewer impulses
9
Q
In dim light:
Circular muscles
A
Relax
10
Q
In dim light:
Radial muscles
A
Contract
11
Q
In dim light:
Pupil
A
Dilates/gets bigger
12
Q
In dim light:
Light entering the eye
A
Increased
