Keywords
heart,anatomy,cardiac,cardiology,blood,blood flow,circulatory system,circulation,atrium,ventricle,aorta,ivc,inferior vena cava,pulmonary artery,cardiovascular system,heartbeat,arrhythmia,irregular heartbeat,electrical impulses,electrodes,contract,cardiac muscle,electrical conduction,heart rate,fibrillation,synchronization,ventrical,ECG,pacemaker,electrophysiology