Which of the following terms describes the amount of blood
ejected per heartbeat?
a) Stroke volume
Stroke volume is determined by preload, afterload, and contractility.
b) Cardiac output
Cardiac output is the amount of blood pumped by each ventricle
during a given period and is computed by multiplying the stroke
volume of the heart by the heart rate.
c) Ejection fraction
Ejection Fraction is the percentage of the end-diastolic volume that is
ejected with each stroke, measured at 42–50% in the normal heart.
d) Afterload
Afterload is defined as the pressure that the ventricular myocardium
must overcome to eject blood during systole and is one of the
determinants of stroke volume.
ejected per heartbeat?
a) Stroke volume
Stroke volume is determined by preload, afterload, and contractility.
b) Cardiac output
Cardiac output is the amount of blood pumped by each ventricle
during a given period and is computed by multiplying the stroke
volume of the heart by the heart rate.
c) Ejection fraction
Ejection Fraction is the percentage of the end-diastolic volume that is
ejected with each stroke, measured at 42–50% in the normal heart.
d) Afterload
Afterload is defined as the pressure that the ventricular myocardium
must overcome to eject blood during systole and is one of the
determinants of stroke volume.