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Multiple Choice
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1

While the eye often is likened to a camera, the processing of a visual image in the brain is more analogous to the operations of a _______ .
A)VCR
B)computer
C)digital recorder
D)LED monitor
2

The size of the pupil opening depends on the amount of light in the environment. The dimmer the surroundings, the more the pupil
A)widens.
B)closes.
C)retracts behind the cornea.
D)becomes elliptical.
3

The electromagnetic energy of light is encoded for the brain by the __________ of the eye.
A)lens
B)cornea
C)fovea
D)retina
4

Rods and cones are involved in the adjustment to different levels of light. Which occurs most quickly?
A)dark adaptation (to dimmer light)
B)light adaptation (to brighter light)
C)bipolar adaptation (to both bright and dim light)
D)colored light adaptation
5

The _______ cells collect and summarize visual information, which is then sent to the brain through the optic nerve.
A)rod
B)bipolar
C)ganglion
D)blind spot





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