Which of the following options correctly identifies the effect of sympathetic and parasympathetic neural system on the given feature or organ?
(A)Feature/organ - Salivary glands, Sympathetic neural system - Stimulates secretion, Parasympathetic neural system - Inhibits secretion
(B)Feature/organ - Pupil of the eye, Sympathetic neural system - Dilates, Parasympathetic neural system - ConstrictsCorrect
(C)Feature/organ - Heart rate, Sympathetic neural system - Decreases, Parasympathetic neural system - Increases
(D)Feature/organ - Intestinal peristalsis, Sympathetic neural system - Stimulates, Parasympathetic neural system - Inhibits
Answer: (B)
Solution
Sympathetic stimulation dilates the pupil while parasympathetic stimulation constricts it — a genuinely correct pairing; the other rows have the sympathetic/parasympathetic effects
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