The eye

Question 1

Iris

Answer 1

Contracts and dilutes to control the amount of light that enters the eye

Question 2

Optic nerve

Answer 2

Conencts the retina to the brain and conveys light signals as electrical signals

Question 3

Aqueous humour

Answer 3

Provides nourishment for the cornea and the lens

Question 4

Lens

Answer 4

Bends the light rays so that they can focus on the retina

Question 5

Retina

Answer 5

Contains sensory cells whihc converts light signals into electrical signals

Question 6

Vitreous humour

Answer 6

Is a liquid of jelly like consitsnecy that gives the eyeball it’s rounded shape

Question 7

Pupil

Answer 7

Allows light to enter the eye

Question 8

Ciliary muscles

Answer 8

Pulls on the lens and adjusts its shape allowing the eye to focus on both near and far objects

Question 9

Sclera

Answer 9

Protects the eye

Question 10

Cornea

Answer 10

bends light rays beforethey are further bent by the lens

Question 11

Pathway of light

Answer 11

Light passes through the cornea to the lens. The cornea and the lens focus the light rays onto the (retina). The cells in the retina absorb and convert the light to electrical signals which are transferred along the optic nerve and then to the brain.