Entries Tagged 'Cardiac Arrhythmias' ↓

Under normal, healthy conditions the human heart beats 60 to 100 times a minute. In the course of a day, the heart pumps an equivalent of 2,000 gallons of blood, carrying essential oxygen and other nutrients to all of the body's cells. Ultimately, the brain coordinates this complex process, but the heart also has its own semi-independent power station. Most of this electrical activity is carried out by pacemaker cells located in the upper right-hand portion of the heart muscle known as the sinus node. From the sinus node, beat impulses are relayed to other areas of the heart via special groups of interlocking relay cells. Read more [...]