The Eye Flashcards
1
Q
Sclera
A
Tough white layer to resist punctures
2
Q
Cornea
A
Bends image, no blood vessels
3
Q
Iris
A
Circular muscle, controls pupil size
4
Q
Ciliary muscles
A
Controls lens shape for focusing
5
Q
Choroid
A
blood rich, dark inky layer to darken eye
6
Q
Lens
A
Focuses and inverts image
7
Q
Aqueous humour
A
Clear fluid between cornea and lens, nourishes the cornea
8
Q
Vitreous Humour
A
Clear pressurized fluid to maintain
eyeball shape
9
Q
Retina
A
Contains photoreceptors
10
Q
Fovea centralis
A
90% of cones, colour vision, central & clarity/ sharpness of vision
11
Q
Blind spot
A
Where optic nerve leaves the eye, no
room for photoreceptors
12
Q
Optic nerve
A
Contains 1 million axons to occipital lobe
13
Q
Rods respond to this colour of light:
A
White light
14
Q
What pigment do the rods contain?
A
Rhodopsin
15
Q
Retinene connects to what vitamin
A
Vitamin A
