The Human Eye: Structure Quiz

What is the function of the cornea in the human eye?

• To carry impulses to the brain

• To detect color

• To refract light as it enters the eye

• To control the amount of light entering the eye

Which part of the eye contains receptor cells sensitive to light?

• Iris

• Lens

• Optic nerve

• Retina

What is the role of the iris in the human eye?

• To change the shape of the lens

• To provide a place of attachment for eye muscles

• To control how much light enters the pupil

• To detect light intensity

Which cells in the retina are responsible for detecting color?

• Ciliary cells

• Cones

• Suspensory cells

• Rods

What is the function of the optic nerve?

• To carry impulses between the eye and the brain

• To refract light

• To change the shape of the lens

• To detect color

What is the purpose of the pupil in the eye?

• To focus light onto the retina

• To detect light intensity

• To allow light to enter the eye

• To protect the eye from external irritants

Which part of the eye is a clear membrane that covers the white of the eye?

• Conjunctiva

• Sclera

• Fovea

• Cornea

What is the function of the ciliary muscle?

• To refract light

• To contract and relax to change the shape of the lens

• To carry impulses to the brain

• To detect color

What connects the ciliary muscle to the lens?

• Sclera

• Optic nerve

• Suspensory ligaments

• Conjunctiva

What is the sclera?

• The point where the optic nerve leaves the eye

• The region of the retina with the highest density of cones

• The strong outer wall of the eyeball

• The transparent lens that refracts light