Parts of the eye

Question 1

What is the eye?

Answer 1

A sense organ sensitive to colour and light intensity

Question 2

What is the sclera?

Answer 2

Tough, supporting wall of the eye

Question 3

What is the cornea?

Answer 3

Transparent layer at the front of the eye which refracts light

Question 4

What is the iris?

Answer 4

Coloured part of the eye which controls how big or small the pupil is

Question 5

What does the lens do?

Answer 5

Focuses light onto the retina

Question 6

What is the retina?

Answer 6

Part at the back of the eye which contains cone and rod cells which are sensitive to light intensity and colour

Question 7

What do the ciliary muscles and suspensory ligaments do?

Answer 7

Control the shape of the lens

Question 8

What does the optic nerve do?

Answer 8

Carries impulses generated by receptor cells to the brain

Question 9

What is the fovea?

Answer 9

The centre of the retina where cones are particularly concentrated at

Question 10

What is the difference between cone and rod cells?

Answer 10

Cone cells are sensitive to the colour of light and don’t work well in low light conditions. Rod cells only allow you to see in black and white. You can’t see colour in the dark as only your rod cells are working