The Eye

Question 1

Function; lens

Answer 1

Helps focus an image on the back of the eye

Question 2

Function; suspensory ligaments

Answer 2

Holds the lens in place

Question 3

Function; Iris

Answer 3

Controls how much light enters the eye

Question 4

Function; Conjunctiva

Answer 4

Provides nutritional support and then necessary substances that help fight infection

Question 5

Function; cornea

Answer 5

Allows light to enter the eye

Question 6

Function; sclerotic layer

Answer 6

Protective layer that surrounds the eye and helps it hold its ball shape

Question 7

Function; Optic nerve

Answer 7

Joins the eye to the brain, turns images the right way round

Question 8

Function; choroid

Answer 8

Prevents the light from reflecting around the eye

Question 9

Function; Vitreous humour

Answer 9

Fills the eyes space

Question 10

Function; retina

Answer 10

Contains 100 million light-sensitive cells which transmit messages to the brain

Question 11

Function; fovea

Answer 11

Contains colour sensitive cells

Question 12

Function; Aqueous humour

Answer 12

Eighty percent of the bending if light happens here

Question 13

Function; pupil

Answer 13

Increases and decreases to allow light into the eye

Question 14

Function; ciliary muscles

Answer 14

Changes the shape of the lens

Question 15

Function; blind spot

Answer 15

Where blood vessels and optic nerve join the eyeball