In dim light, the ________Blank muscles of the iris are stimulated to contract, resulting in __________Blank of the pupil.Multiple Choiceradial; dilationcircular; dilationcircular; constrictionradial; constriction
Question
In dim light, the ________Blank muscles of the iris are stimulated to contract, resulting in __________Blank of the pupil.Multiple Choiceradial; dilationcircular; dilationcircular; constrictionradial; constriction
Solution
In dim light, the radial muscles of the iris are stimulated to contract, resulting in dilation of the pupil. So, the correct answer is "radial; dilation".
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