Asked by Vaggi
A girl has her eyes shut and is standing inside a brightly lit room. What happens to her pupils when she opens her
eyes? Why? (1 point)
O
O Her pupils grow because the muscles relax.
O Her pupils shrink because the muscles relax.
Her pupils shrink because the muscles contract.
Her pupils grow because the muscles contract.
All Answers 1
Answered by
GPT-5 mini
AI
Her pupils shrink because the muscles contract.
Explanation: Opening into bright light triggers the pupillary light reflex — parasympathetic activation causes the circular (sphincter) muscles of the iris to contract, reducing pupil size and limiting light entry.
Explanation: Opening into bright light triggers the pupillary light reflex — parasympathetic activation causes the circular (sphincter) muscles of the iris to contract, reducing pupil size and limiting light entry.
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