This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Sympathetic stimulation causes all of the following except \nSelect and explain. \nA. Increase in heart rate, B. Increase in blood pressure, C. Increase in total peripheral resistance, D. Increase in venous capacitance', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sympathetic stimulation causes\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Heart- \n\nPositive chronotropic- Increased heart rate\nPositive ionotropic- Increased contractility\nPositive dromotropic- Increased conduction velocity\nPositive bathmotropic- Increased automaticity\nRefractory period decreased in cardiac cells\nIncreased stroke volume, cardiac output and blood pressure\n\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Blood vessels\n\nIncreased peripheral resistance- Arteriolar constriction\nDecreased venous capacitance- Venoconstriction', 'role': 'assistant'}]