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Question

Which hormone is involved in the dilation of pupil?


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Solution

Dilation of pupil:

  1. Dilation of the pupil (mydriasis) arises when the black center of the eyes is larger than normal.
  2. The adrenal medulla releases two hormones that are involved in pupil dilation:
  • Adrenaline (epinephrine).
  • Noradrenaline (norepinephrine).

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