The Eye

Question 1

Eyelid

Answer 1

A fold of skin which covers the eye. Cleans and protects the eye

Question 2

Cornea

Answer 2

Is a transparent covering on the eye, that helps to converge light rays that enter the eye

Question 3

Sclera

Answer 3

White part of the eye which is made of tough collagen fibres, provides protection and support

Question 4

Retina

Answer 4

A layer of light sensitive cells called photoreceptors at the back of the eye, they detect light rays that are focused by the cornea and lens

Question 5

Choroid

Answer 5

Layer of blood vessels with a black pigment, this nourishes the eye and absorbs light

Question 6

Iris

Answer 6

Ring of muscles around the pupil that are coloured; controlling the amount of light entering the eye

Question 7

Pupil

Answer 7

Hole in the middle of the iris, allowing light to enter the eye

Question 8

Lens

Answer 8

Transparent, flexible, can change shake due to ciliary muscles

Question 9

Fovea

Answer 9

located at the back of the eye, high density of cone cells, gives sharp central vision

Question 10

Optic disc

Answer 10

Blind spot where there are no photoreceptors, optic nerves leave the eye

Question 11

Optic nerve

Answer 11

Bundle of fibres replaying info from the retina and fives to the brain