Examlex
Which of the following structures will appear radiopaque on dental x-ray film?
Cones
Photoreceptor cells in the retina of the eye responsible for color vision and functioning best in relatively bright light.
Rods
Visual sensory receptors found at the back of the retina, responsible for noncolor sensitivity to low levels of light.
Fovea
A small depression in the retina of the eye where visual acuity is highest.
Pupil
The black circular opening in the center of the eye's iris that regulates the amount of light that enters.
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