This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adrenergic System, Subject name: Pharmacology
[{'content': 'Pupil fails to dilate by giving cocaine in : \nSelect and explain. \nA. Central sympathetic paralysis, B. Central parasympathetic paralysis, C. Peripheral parasympathetic paralysis, D. Peripheral sympathetic paralysis.', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' peripheral sympathetic paralysis In periphery cocaine blocks the uptake of Adrenaline and Noradrenaline in Adrenergic Nerve ending* resulting in higher concentration of sympathetic neurotransmitters (Sympathomimetic effect):The peripheral sympathomimetic action of cocaine produces following effect:1. Mydriasis2. Rise in B.P.3. Local vasoconstriction4. TachycardiaTherefore if the peripheral sympathetic system is paralysed it will lead to reverse of the above mentioned actions.", 'role': 'assistant'}]