<prompt> Which of the following factors affect pulse pressure?Stroke volumeCompliance of aoaEjection fractionAll  <response>: Two major factors affect the pulse pressure: 1 the stroke volume output of the hea and 2 the compliance total distensibility of the aerial tree. A third, less impoant factor is the character of ejection from the hea during systole. Ref: Guytons physiology, 11th edition, page 73 