Eye

Question 1

Cornea function

Answer 1

Transparent, dome shaped. It is a powerful refracting surface, it provides 2/3 of the eyes focusing power

Question 2

Pupil function

Answer 2

Hole in the centre of the eye where light passes through

Question 3

Conjunctiva function

Answer 3

Thin transparent tissue that covers the visible part of the eye. It has blood vessels that are nearly invisible to us. Protective layer

Question 4

Lens function

Answer 4

Focus the light onto the retina. It is attached by suspensor ligaments

Question 5

Iris function

Answer 5

Coloured part that controls the amount of light that enters the eye. It has tiny muscles that make it dilate and constrict the pupil size.

Question 6

Retina function

Answer 6

Light sensitive part of the eye, captures light rays that enter the eye (rods and cones)

Question 7

Humour function

Answer 7

Fluid like gel that fills the eye, keeps the shape. Also provides nourishment (aqueous and vitreous)

Question 8

Fovea function

Answer 8

Very centre of macula, where light must fall to see fine details like reading or recognising faces.

Question 9

Macula function

Answer 9

Located in the centre of the retina. Small and highly sensitive, crucial for central vision

Question 10

Optic nerve

Answer 10

Transmits electrical impulses to the brain. Connects to the macula. Has no rods or cones (is a blind spot)