Heart Work

Everyone knows that the size of the heart can be compared with a clenched fist. But not everyone knows that in a day it can pump about sixteen thousand three hundred and sixty liters of blood. The weight of this most important organ ranges from two hundred twenty-five to three hundred and forty grams. On the whole, how the heart works depends on the health of the person. In its structure, the heart can be compared to a two-story house. Each of its parts has an upper room, the auricle and the lower chamber, the right ventricle and the left one.

The work of the heart does not stop for a second. And if you analyze in detail the connection of all the parts adjacent to it, you can simply admire their concerted activities. On both sides between the ear and the ventricles there is a door called the valve. The ventricles and arteries have exits, and the entrances pass from the veins to the ears. A healthy heart has perfectly fitted doors, since blood displaced by the heart back to the same door should not get. Closing and opening of the valves occurs with every rhythmic beat of the heart.

On both sides of the heart has one pump. Blood on the left side of the lungs, enriched with oxygen, rises through the body. The right side of the blood comes with less oxygen, but it contains more carbon dioxide, and it returns to the lungs.

Ears of the auricle consist of thinner walls, since they pump blood at small distances. The walls of the right ventricle are thicker, because it directs blood to the lungs. But the most important part of the heart is the left ventricle, and it has the thickest walls, because the distance to which it needs to pump blood is the largest.

Not everyone can imagine how serious the work of the heart is, the compression and decompression of which is about a hundred thousand times a day.

The strength with which the heart contracts is not always the same. In the process of physical work, small arteries and capillaries expand in working muscles, and the flow of blood to them increases. Muscles in the process of contracting compress the veins and push to the heart a large amount of blood. The strength of muscle contraction, including cardiac, depends on the initial stretching. If they are stretched, that is, they have elongated fibers, then their compression will be stronger. The heart, which receives an increased amount of blood, will expand, and the muscle fibers will be lengthened. Reduction of such a heart is stronger. Receiving more blood, it also pushes it into the arteries in large quantities. Blood circulation thus increases, and all organs along with this receive more nutrients and, accordingly, oxygen.

If a person is healthy, the work of the heart is carried out rhythmically, without causing any complications. However, with a diseased heart, his muscle weakens, it works hard, and the large amount of blood is distilled in case of increased physical activity, it is not able to. The work of the weakened heart is also broken. If it can not provide enough blood to the organs, then this condition is called heart failure.

In people with a heart condition, the pulse with exercise increases significantly, and instead of eighty beats per minute, it reaches one hundred and forty beats. Heart failure primarily affects the brain. If a small blood flow and insufficient amount of oxygen is made to the respiratory center, and carbon dioxide is then withdrawn at a slower rate, irritation of the respiratory organs occurs. In this case, the patient feels shortness of breath.

The disease of this vital organ is often accompanied by unpleasant sensations, tingling in the heart. Also, increased heart rate is observed in severe excitement, neurosis.

Even if the work of a healthy person's heart does not cause fear, this does not mean that he should not be protected. Therefore, the load on it is desirable to be reduced to a minimum, because it is the work of the heart that determines the length of human life.