how many times per minute does all the blood in your body pass through your heart
Average cardiac output (the amount pumped by one ventricle per minute) is the heart rate times the stroke volume. Average heart rate at rest is about 70 beats per minute, so 70 bpm x 70 ml/beat = 4900 ml pumped per minute. Typical adult blood volume is around 5 liters (5000 ml). So the answer works out that one ventricle pumps almost your entire blood volume in one minute - or 70 beats.