This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'Atropine used in preanaesthetic produces all EXCEPT \nSelect and explain. \nA. Bronchoconstriction, B. Vagolytic effect, C. Muscarinic blockage, D. Decreased secretions', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) Bronchoconstriction> All visceral smooth muscles that receive parasympathetic motor innervation are relaxed by Atropine.> Atropine causes: Relaxes smooth muscles of bronchus - causes Bronchodilation Relaxes smooth muscles of stomach and intestine - causes Constipation> Relaxes smooth muscle of ureter and bladder - causes Urinary retention> Relaxes smooth muscles of the iris - causes Mydriasis> Inhibits parasympathetic outflow to the heart - causes Tachycardia.', 'role': 'assistant'}]