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': 'Hydroxyethyl starch is a \nSelect and explain. \nA. Vasodilator, B. Inotrope, C. Plasma expander, D. Diuretic', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Plasma expander Plasma expanders are high molecular weight substances which exe colloidal osmotic pressure and when infused intravenously retain fluid in the vascular compament.Substances em lo ed as Plasma expanders include Human albuminDextran QHydroxyethyl starch (Hetastarch) QDegraded gelatin polymerPolyvinyl pyrrolidane', 'role': 'assistant'}]