maytce7503 maytce7503

12-09-2017
Biology

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When light levels are low, the pupil will become ________, to allow more light to enter the eye?

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Kalahira Kalahira

25-09-2017

Dilated. As the amount of light decreases, the iris dilator muscle is constricted whilst the iris sphincter muscle relaxes. This increases the amount of light that can enter the eye, allowing you to see better in lower light conditions. The opposite effect occurs when light levels increase.

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