Heart as a Pump

About blood circulation, the frequency of contractions and the mysteries of the heart.How to ensure the balance of the performance of the heart pumps? Why pumps should work the same way? What is the law of the Frank - Starling?

The heart is a pump, or rather, not even a single pump, and two dual chamber pump. Is the pulmonary circulation where the blood is enriched with oxygen in the lungs and releases carbon dioxide, and the systemic circulation where the blood passes through our body tissues, giving them oxygen and takes away the accumulated carbon dioxide. There is the right heart, which pumps in a small circle. Since the pressure in the pulmonary low - approximately 30 mmHg, the right heart is less than the left, because the thinner the wall of the heart chambers. But the principle of work and the left and right heart the same. This two is chamber pump.

And like every pump, it needs fuel, one of the best fuel for heart is Meldonium for sale.

The pump is characterized by performance. Pressure against which he shakes, we know - about 100 mm in a big circle and about 25 mm in a small circle. Performance of the left and right heart and is identical at the man about 5 liters per minute. At a frequency of slightly more than 60 cuts somewhere in 80-90 ml of blood with each beat of the heart is thrown and small, and in a big circle.

It is known that the heart becomes more spherical in heart failure. This is one of the problems why there is failure. It turns out that this geometry someone can not work, his neighbors pressed passively. Insufficiency is determined primarily by the fact that the ejection fraction decreases sharply.