All of the following statements are false about stroke volume EXCEPT:
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 output/heart 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)
Determined by after load
Determined by pre-diastolic volume
Decreases by increase in heart rate
Increased by increase in heart rate
Heart, Circulation, and Blood