Home Questions Human Anatomy and Physiology Questions What causes the size of pupil to decrease during bright light
Question:

What causes the size of pupil to decrease during bright light

Choose the correct answer:
  • A. contraction of circular muscles of iris ✅ Correct
  • B. contraction of radial muscles of iris
  • C. relaxation of circular muscle of iris
  • D. relaxation of radial muscle of iris

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