Pupillary sphincter — Free Physiology Illustration | GPAI | GPAI

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Pupillary sphincter — Free Physiology Illustration | GPAI | GPAI

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Pupillary sphincter

Pupillary sphincter

Physiology

Pupillary sphincter

Front-view detail of the iris showing the pupillary sphincter as a thin circular ring of smooth muscle encircling a dark central pupil. Depicted as a narrow reddish-brown muscular band within the iris-like disc.

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PNG

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