Ventricular Volume During Cardiac Cycle
End Systolic Volume
Its volume of blood left in the ventricles at the end of the systole.
Normally it's 50 ml in each ventricle.
End Diastolic Volume
It's the volume of blood in the ventricles at the end of the diastole.
Normally it's 120 ml in each ventricle.
Stroke Volume
Its volume of blood ejected by ventricles during each heartbeat.
Stroke volume = End Diastolic Volume - End Systolic Volume
Normally it's 70 ml for each ventricle.
Ejection Fraction
It's the fraction of end-diastolic volume that is ejected during each systole.
Ejection fraction = (Stroke volume / End Diastolic Volume) x 100
Normally its about 60%