Structure

Question 1

Pupil

Answer 1

A hole that allows the light to enter into the eye

Question 2

Cornea

Answer 2

Bends the light rays to focus them into the eye

Question 3

Conjunctiva

Answer 3

Keeps the eye moist thanks to lysosome (produced by tear glands)

Question 4

Aqueous humour

Answer 4

Contains nutrients to nourish the lens

Question 5

Iris

Answer 5

Formed by a pair of muscles (colored part of the eye) that regulate the amount of light that enters into the eye

Question 6

Lens

Answer 6

Changes shape for focusing and accommodating

Question 7

Ciliary muscle

Answer 7

Contracts and relaxes to make the lens focus in a near object.

When it relaxes the suspensory ligaments stretch, but when it contracts the s.l. loosen

Question 8

Suspensory ligaments

Answer 8

Stretch to make the lens focus a distant object

Question 9

Vitreous humour

Answer 9

It’s a liquid (like jelly) that keeps the eyeball in shape

Question 10

Retina

Answer 10

It’s a layer that contains photoreceptors

Question 11

Photoreceptors

Answer 11

Cones: receptors that are active for colors in bright light

Rods: receptors that are active for black and white during dim light

Question 12

Fovea

Answer 12

Point in the retina that contains many photoreceptors

Question 13

Optic nerve

Answer 13

Carries the message to the brain

Question 14

Choroid

Answer 14

Black layer full of blood vessels. Provides nutrients to the retina and absorbs the extra light that enters into the eye

Question 15

Sclera

Answer 15

A tough coat that protects the eye (white part)

Question 16

Blind spot

Answer 16

The point of the retina without receptors. The entrance of the optic nerve