What You Do Not Know About Your Heart
When it comes to sustaining life, one muscle carries much of the burden. That muscle is none other than the heart. For years now, men have always been fascinated how something the size of a fist can actually support a body more than 10 times its size. Now, while many books have been written about it, there are still actually some things that you might not be aware of.
One of the many things that not many people know about is the fact that the human heart actually does not start out as a fist-shaped muscle. In fact, the heart starts out as a tube-like organ not unlike the ones that can be found in gold fish. Because the other organs and muscles in the fetus are also growing at a phenomenal rate, the “tube” heart has to double back into a horseshoe-like shape. A few weeks more and this horseshoe develops two chambers. A few more weeks and a third chamber develops. This goes on until what started out as a “tube” heart becomes a four-chambered muscle, roughly the size of the person’s fist.
It is also a little known fact that, although the heart is considered to be at the center part of the chest, it is actually the left side that does most of the work. This is one of the reasons why a number of people in the past erroneously believed that the heart is located at the left side of the chest. Why does the left side pump harder than the right side? Because, the left part of the heart is responsible for delivering blood to the farthest parts of the body while the right is responsible for the lungs.
Ever had an argument about which one is more important – the heart or the brain? Well, you can now safely answer, “heart”. This is because, within the heart, one can find the Sino-Atrial Node, a group of neurons that are considered to be self-starters since they do not need external stimuli in order to work. Now, these neurons are the ones responsible for firing up and allowing the heart to keep a normal beating pattern. When the SA node fires up an electric signal, the heart muscles alternate between twisting and relaxing in order to open up the valves and, thus, allowing the blood to flow from one chamber to the next.
While most people make use of “heart attack” and “cardiac arrest” interchangeably, the two terms actually do not refer to the same thing. In a heart attack, the blood vessels going to the heart are blocked causing the heart to starve from oxygen. On the other hand, in a cardiac arrest, something causes the heart to, at the very least, skip a beat. Both, however, lead to the major organs suffering from tissue necrosis which, ultimately, would lead to the victim’s death.
In order to deal particularly with the last scenario, your best move would be to make sure that you have at least an AED unit on hand. An alternative to this would be to make sure that the people around you have undergone a CPR certification training program.