Final answer:
The ventricles pump an average of 70-80 mL of blood per minute, not 50-60 mL. Stroke volume is the amount of blood pumped out of each ventricle with each beat.
Step-by-step explanation:
The statement in the question is false. The ventricles pump an average of 70-80 mL of blood per minute, not 50-60 mL. This quantity is known as stroke volume, which is the amount of blood pumped out of each ventricle with each beat. During ventricular systole, the contraction of the ventricular muscle raises the pressure within the ventricle, pushing open the pulmonary and aortic semilunar valves and ejecting blood from the heart. The remaining blood in the ventricle after contraction is called end systolic volume.