Sensory System: Eye Quiz

Which of the following is NOT a layer of the eyeball?

• sclera
• lens
• retina
• choroid

Which of the following structures is responsible for REFRACTING (bending) the light rays?

• pupil
• lens
• iris
• cornea

Tears are produced by the:

• lacrimal apparatus
• retina
• lens
• conjunctiva

Which of the following structures FOCUSING the incoming light rays onto the retina?

• iris
• lens
• pupil
• ciliary body

Which of the following structures are the sensory receptor cells active in DIM LIGHT? (black and white)

• cones
• lens
• rods
• optic disk

Which of the following structures are the sensory receptor cells that see COLOR?

• cones
• lens
• rods
• optic disk

Which of the following statements regarding the retina is NOT true?

• Light strikes the retina at the macula lutea.
• The center of the macula lutea is the fovea centralis.
• The point of sharpest vision is the optic disk.
• Rods and cones are found in the retina

Which of the following statements regarding the eye muscles is NOT true?

• Rectus muscles pull in a straight line.
• Strabismus occurs when there is a weakness in one of the eye muscles.
• Oblique muscles pull on an angle.
• There are four eye muscles for each eye

Which of the following statements regarding the eye is NOT true?

• The colored portion of the eye is the pupil.
• Eyelashes are also called cilia
• There are sebaceous glands in the eyelid.
• The conjunctiva is a mucous membrane covering the anterior surface of the eyeball.

Which layer of the eye is responsible for supplying blood to the eye?

• retina
• choroid
• sclera
• lens