Eye Ball👁️

Question 1

What is the Sclera?

Answer 1

Tough white layer to resist punctures

Question 2

What is the Cornea?

Answer 2

Bends image, no blood vessels

Question 3

Iris

Answer 3

Circular muscle, controls pupil size

Question 4

Ciliary muscles

Answer 4

Controls lens shape for focusing

Question 5

Choroid

Answer 5

blood rich, dark inky layer to darken eye

Question 6

Lens

Answer 6

Focuses and inverts image

Question 7

Aqueous humour

Answer 7

Clear fluid between cornea and lens, nourishes the cornea

Question 8

Vitreous Humour

Answer 8

Clear pressurized fluid to maintain eyeball shape

Question 9

Retina

Answer 9

Contains photoreceptors

Question 10

Fovea centralis

Answer 10

90% of cones, colour vision, central & clarity/ sharpness of vision

Question 11

Blind spot

Answer 11

Where optic nerve leaves the eye, no room for photoreceptors

Question 12

Optic nerve

Answer 12

Contains 1 million axons to occipital lobe

Question 13

Rods respond to this colour of light:

Answer 13

White light

Question 14

What pigment do the rods contain?

Answer 14

Rhodopsin

Question 15

Retinene connects to what vitamin

Answer 15

Vitamin A

Question 16

Optic Chiasma

Answer 16

the part of the brain where the optic nerves cross and is therefore of primary importance to the visual pathway