Structure of the Human Eye

Which part is #1?

• sclera

• cornea

• retina

• lens

Which part is #2?

• iris

• cornea

• retina

• lens

Which part is #4?

• pupil

• iris

• cornea

• lens

Which part is #5?

• pupil

• iris

• cornea

• lens

Which part is #7?

• sclera

• optic nerve

• cornea

• retina

What does the optic nerve do?

• transmit impulses from retina to brain

• helps the eye focus

• receives light and sends it to brain

• transmits light rays to retina

What does the iris do?

• transmits light rays to retina

• helps the eye focus

• sends messages to the brain

• a muscle that regulates how much light enters the eye

What does the sclera do?

• protects the eye

• helps the eye focus

• allows light to enter eye

• transmits light rays to retina

This structure is the back of the eye and it sends images to the optic nerve.

• Cornea

• Lens

• Retina

• Pupil

The hole in the iris gets bigger and smaller because

• the iris is a muscle that moves to make the pupil larger/smaller

• the pupil can adjust itself to the amount of light coming in

• the pupil is a muscle that controls the size of the iris