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Questions and Answers
What is the function of the cornea in the eye?
Provides fixed refraction to focus light onto the retina.
What is the function of the lens in the eye?
Provides adjustable refraction to focus light onto the retina.
What is the function of the iris in the eye?
Composed of contractile smooth muscle to control the size of the pupil.
Which muscle group in the iris is responsible for contraction (miosis) of the pupil?
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Which muscle group in the iris is responsible for dilation (mydriasis) of the pupil?
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What controls the contraction of the sphincter pupillae muscle in the iris?
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What controls the dilation of the dilator pupillae muscle in the iris?
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What gives the eye its characteristic color?
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