This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Circulation: Arterial Pressure Regulation - Role of Kidney, Subject name: Physiology
[{'content': 'Pulsepressure is affected by? \nSelect and explain. \nA. Stroke volume, B. Compliance of aorta, C. Ejection fraction, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ANSWER: (D) AllREF: Guytons physiology 11th edition page173Pulse Pressure is most easily defined as being the amount of pressure required to create the feeling of a pulse."Two major factors affect the pulse pressure; (1) the stroke volume output of the heart and (2) the compliance (total distensibility) of the arterial tree. A third, less important factor is the character of ejection from the heart during systole"', 'role': 'assistant'}]