This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
Largest % of blood volume in 
Select and explain. 
A. Aoa, B. Aery /Aerioles, C. Venules / Veins, D. Capillaries
C: Venules / Veins
Answer: C: Venules / Veins 
Explanation: At rest,At least 50% of the circulating blood volume is in the systemic veins, 12% is in the hea cavities, and18% is in the low-pressure pulmonary circulation.Only 2% is in the aoa, 8% in the aeries,1% in the aerioles, and5% in the capillariesRef: Ganong's Review of Medical Physiology Twenty-Third Edition Page No:543