Eye Review

Which structure contracts and relaxes, controlling the size of the pupil?

• Cornea

• Iris

• Retina

• Sclera

Which layer of the eye contains the neurons that react to light and color?

• Choroid

• Retina

• Sclera

• Cornea

Which letter represents the retina?

• A

• C

• E

• F

Which letter represents the cornea?

• D

• B

• C

• F

Which letter represents the optic nerve?

• D

• B

• F

• A

Which letter represents the sclera?

• A

• B

• C

• D

Which letter represents the pupil?

• A

• B

• C

• D

Which cells help us view color through wavelengths of light?

• rods

• cones

• optic nerve

• neurons

In which situation would rods take over?

• Low levels of light

• Very bright light

• With increasing age

• After a mutation

Which of these wavelengths of light are cones NOT sensitive to?

• Red

• Yellow

• Green

• Blue