ANATOMY

Detailed explanation-1: -(i) During a cardiac cycle, both ventricles pump out approximately 70 ml of blood called stroke volume.

Detailed explanation-2: -Cardiac output is the volume of blood being pumped by the heart in a minute. It is equal to the heart rate multiplied by the stroke volume. So if there are 70 beats per minute, and 70 ml blood is ejected with each beat of the heart, the cardiac output is 4900 ml/ minute.

Detailed explanation-3: -The average stroke volume of a 70 kg male is 70 mL Not all of the blood that fills the heart by the end of diastole (end-diastolic volume-EDV) can be ejected from the heart during systole. Thus the volume left in the heart at the end of systole is the end-systolic volume (ESV).