An intricate web of blood vessels and electrical circuits travel throughout the heart, the center of the cardiovascular system, 24-hours-a-day, 365 days-a-year, without rest. This constant activity is responsible for moving needed blood, nutrients and waste throughout the body.
Heart Health
Keeping the entire heart system healthy is, to a great extent, under individual control. Commonly prescribed advice to eat well, exercise, and avoid smoking, can go a long way in maintaining heart health. However, certain heart problems can appear despite the best efforts to stay healthy.
 The size of a clenched fist, the heart is comprised of four chambers made of muscle and linked by valves that act as doorways.
The heart has a unique, built-in electrical system. The sinus node, often called the heart’s pacemaker, triggers the heartbeat. Then the electrical pathways that run through the heart cause contractions in the upper and lower chambers of the heart, pumping blood in the steady, rhythmic pattern that we feel as our heartbeat.
|
 |
|
