📝 Multiple Choice Question
General-science
Identify the structure that controls the size of the pupil.
A
Vitreous humour
B
Iris
C
Ciliary muscles
D
Cornea
Explanation
Anatomically, the iris is a highly pigmented, dynamic muscular ring positioned in the eye that reflexively dilates and strictly constricts to carefully physically regulate the exact amount of ambient light allowed to enter the pupil.
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