This page explains the human heart's function, including its average heartbeat of 70 times per minute and pumping of 5 liters of blood. The sino-atrial node serves as the pacemaker, with contractions ...This page explains the human heart's function, including its average heartbeat of 70 times per minute and pumping of 5 liters of blood. The sino-atrial node serves as the pacemaker, with contractions detected by electrocardiograms (ECGs). It highlights ventricular fibrillation, which can be treated with defibrillators. Additionally, the heart rate is adjusted by the accelerans and vagus nerves, responding to stress and bodily needs to regulate heartbeat and blood pressure.
