John sees Martha; the pupils of his eyes dilate. It is "love at first sight." What division(s) of the ANS is/are involved?

Question

Quizplus · Accepted Answer

The dilation of pupils in response to seeing someone you are attracted to is primarily mediated by the sympathetic division of the autonomic nervous system (ANS), which is responsible for the body's "fight or flight" responses, including increasing heart rate, dilating pupils, and redirecting blood flow. The parasympathetic division typically mediates "rest and digest" functions, which would not directly cause pupil dilation in this context.

John Sees Martha; the Pupils of His Eyes Dilate