IS_Unit10_Checkpoint 10.2_E

(a) What is the name of A?

• optic nerve

• cornea

• iris

• lens

(b) What is the function of A?

• a transparent layer which helps focus light

• transmits signals from light-sensitive cells to the brain

• regulates the amount of light entering the eye

• its thickness changes to help focus light

(c) Which part is iris?

• A

• B

• C

• D

(d) What is the function of C?

• regulates the amount of light entering the eye

• its thickness changes to help focus light

• controls the size of the pupil

• protects the eyeball

(e) What is the name of D?

• iris

• retina

• pupil

• lens

(e) What is the function of E?

• protects the eyeball

• controls the size of the pupil

• its thickness changes to help focus light

• changes the thickness of the lens

(f) Which part contains light-sensitive cells that produce signals when stimulated by light?

• E

• F

• G

• H

(g) What is the name of G?

• pupil

• retina

• focusing muscle

• sclera

(h) What is the function of H?

• transmits signals from light-sensitive cells to the brain

• regulates the amount of light entering the eye

• protects the eyeball

• changes the thickness of the lens