In Bright Light, the _____ Muscle of the Iris Contracts

question 70

Multiple Choice

In bright light, the _____ muscle of the iris contracts, causing a/an _____ (increase/decrease) in the size of the pupil (constriction) .

• A) sphincter pupillae; increase
• B) dilator pupillae, decrease
• C) ciliary, decrease
• D) sphincter pupillae; decrease

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Newspaper Advertisement

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Definite Terms

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Performance

The action of carrying out or accomplishing a task, duty, or undertaking.