<prompt> All of the following statements are false about stroke volume EXCEPT:Determined by after loadDetermined by pre-diastolic volumeDecreases by increase in heart rateIncreased by increase in heart rate  <response>: Ans. C Decreases by increase in heart rateRef: Ganong, 25th ed. pg. 570-71 Basically it is asking here about the TRUE statement among the given choices. Stroke volume is indirectly proportional to heart rate Stroke volume cardiac outputheart rate As the heart rate increases, stroke volume decreases. After load is determined by peripheral resistance. Therefore, it has nothing to do with stroke volume determination. Stroke volume depends upon end diastolic volume NOT pre-diastolic volume 