Ch 8 Quiz 2 Slides 20 - 20

This layer of the eye contains rods and cones.

• retina

• slera

• optic disc

• iris

• Choroid

This type of photoreceptor cell allows humans to see gray tones in dim light while also providing us with peripheral vision.

• Cones

• Rods

• Cornea

• Iris

A color-blind person has likely lost the ability of his or hers _______ to function properly.

• rods

• cones

• iris

• optic disc

This area of the retina has the highest concentration of cones.

• ciliary body

• optic nerve

• optic disc

• fovea centralis

• vitreous humor

This gel-like substance keeps the eye from collapsing inward.

• iris

• Cornea

• Vitreous humor

• optic disc

• Sclera

This flexible, crystal-like structure helps focus light on the retina.

• choroid

• Iris

• sclera

• optic disc

• Lens

The pupil is an opening in what part of the eye?

The choroid consists of an outer, pigmented layer and an inner, neural layer which is home to rods and cones.

• True

• False

The pupil is the circular opening in the iris through which light passes.

• True

• False

Eye movements are controlled by the abducens, oculomotor, and trochlear nerves.

• True

• False