This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Circulation: Microcirculation and Lymphatic System, Subject name: Physiology
[{'content': 'Amount of blood in capillary pool at anytime - \nSelect and explain. \nA. 250 ml, B. 1000ml, C. 2000ml, D. 2500 ml', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 250 mlo Capillaries contain 5% of total blood volume, i.e., 250 ml out of 5000 ml of total blood.VesselPercentage of total blood volume containedAorta2Artery8Arteriale1Capillaries5Venous system54Pulmonary circulation18Heart12", 'role': 'assistant'}]