Final answer:
The amount of blood pumped out of each ventricle with each contraction is known as stroke volume (SV), which is typically 70–80 mL. The correct option is 4) stroke volume (SV)
Step-by-step explanation:
The amount of blood pumped out of each ventricle with each contraction is known as stroke volume (SV). During the ventricular ejection phase, the contraction of the ventricle muscles increases the pressure within, pushing blood through the pulmonary and aortic semilunar valves. Both ventricles pump the same amount of blood with each beat, which typically ranges from 70–80 mL.
After the blood is pumped out, the remaining blood in the ventricle is called the end-systolic volume (ESV). Not to be confused with end-diastolic volume (EDV), which is the amount of blood in the ventricles just before contraction, or with the isovolumetric contraction phase, where no blood is ejected as the pressure in the ventricles is not high enough yet. The correct option is 4) stroke volume (SV)