Eye Structure

True or False: The pupil is the only living tissue in the human body that doesn’t contain any blood vessels.

• True

• False

This structure is a cable of nerves that is located in the back of the eye

and sends impulses/messages to the brain.

• retina

• optic tissue

• optic nerve

• iris

Light enters through the...

• cornea

• glands

• iris

• retina

Why does the center of a person's vision appear more clear and colorful than the edges of their vision?

• The center of the eye has more rod cells than the edges

• The center of the brain holds the retina

• The center of the eye has more cone cells than the edges

• The center of the eye is thicker than the edges

The retina is actually an extension of the brain, connected by the optic nerve.

• True

• False

What is the outer tough layer of the eye?

• Lens

• iris

• pupil

• Sclera 

What is structure number 5?

• Iris

• Cornea

• Aqueous humour

• Ciliary muscle

What is structure number 11?

• Sclera

• choroid

• Fovea

• Retina

What is structure number 15?

• Optic nerve

• arteries and veins

• Blind spot

• Vitreous humour

What is the function of the pupil?

• Sends messages picked up by the retina to the brain

• The hole that controls the different amounts of light

• the colored part of the eye that controls the size of the pupil

• transparent jelly like fluid that fills the eye and refracts light