The anterior portion of the sclera is the:

• PUPIL
• IRIS
• CORNEA
• LENS

Which of the following structures is responsible for refracting light rays?

• PUPIL
• LENS
• IRIS
• CORNEA

The opening in the center of the iris is the:

• PUPIL
• RETINA
• LENS
• CONJUNCTIVA

Which of the following structures focuses 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?

• CONES
• LENS
• RODS
• OPTIC DISK

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

• CONES
• LENS
• RODS
• OPTIC DISK

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

• RETINA
• CHOROID
• SCLERA
• LENS

Which layer of the eye contains the sensory receptors for sight?

• RETINA
• CHOROID
• SCLERA
• LENS

Which of the following structures is NOT part of the external ear?

• AURICLE
• MALLEUS
• AUDITORY CANAL
• TYMPANIC MEMBRANE

The opening to the outer ear is the:

• OVAL WINDOW
• ELONGATED WINDOW
• EXTERNAL AUDITORY MEATUS
• TYMPANIC MEMBRANE