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10 curiosities about the functioning of the human heart
November 22, 2020
There are some curiosities about the functioning of the human heart that seem implausible. For example, if someone were to align the blood vessels that make up this organ, they could circle the planet more than two times following the equator. In total you would get a length of 60,000 miles.
The human heart is an organ weighing just 300 grams. However, in this small volume one of the most surprising machinery of nature, responsible for maintaining life, is condensed.
The following are some of those curiosities about the functioning of the human heart. They allow us to understand why this organ has fascinated and continues to fascinate scientists of all times.
1. Neither round nor left
Although traditionally almost everyone believes that the heart is on the left side of the chest, the truth is that it is not. Actually, is located in the central part of the thorax, between the two lungs.
The reason the heartbeat is felt more clearly in the left zone is that the heart is not actually a round organ. It looks more like a cone and the point is directed towards the left side.
Keep reading: Types of tachycardia
2. Beats outside the body
One of the most surprising curiosities about the functioning of the human heart is that this organ is able to continue beating if it is outside the body. You may have seen it in the movies, but it's not gimmick, it's reality. In fact, this allows transplants to be done.
This is because it generates its own electrical impulses. That is why it keeps moving on its own and, in fact, can do so for several seconds and even hours. In order for it to continue for longer, it needs blood to reach it, since it provides it with fuel.
3. The hardest worker in the body
There is no other muscle in the human body that works as hard as the heart. It is the first organ to form in the embryo and since then it never stops beating, until death. No one else does such a marathon job.
The heart pumps about five liters of blood per minute. That means that in just one hour it circulates about 300 liters throughout the body. By the end of the day, it will have pumped 7,200 liters, which averages two and a half million liters per year. Nothing bad.
4. The heartbeat: one of the curiosities about the functioning of the human heart
The human heart begins to beat about four weeks after fertilization occurs. Since then, he has never stopped doing it. On average, it has about 80 beats per minute, which means that it beats about 115,200 times in a day. A year there will be 42 million heartbeats.
Women's hearts beat a little faster than men's. Likewise, it is usual that in children it is more frequent than in adults. A child's heart beats about 100 times every 60 seconds. During physical exercise you can reach 200 per minute.
Read also: Tips to take care of heart health
5. Heart cancer?
Heart cancer does exist, but it is extremely rare. This is because heart cells hardly reproduce after birth. On the other hand, this organ is very well protected from environmental factors and this also makes it less prone to develop an oncological process.
It is estimated that heart cancer only corresponds to 0.1% of total casesOf cancer. It has been established that a good part of them correspond to an expansion of some neoplasm located in another part of the body.
6. The organs that need it most
The main function of the heart is to send blood to all the organs of the body. There are some who require it more than others. For example, 20% of the pumped blood goes to the brain, which needs nutrients and oxygen to function as it should.
Another 22% of the blood pumped by the heart goes to the kidneys, which have the role of filtering. The remaining 60% is distributed in the other organs of the body.
7. A part of the body that does not need blood
Just as some organs need more of the blood pumped by the heart, there is also a part of the body that does not require it. All tissues receive this vital fluid, with the exception of the cornea.
The cornea is the transparent part of the eye and thanks to this it allows the passage of light. If it received blood, its function would be altered and we could not see anything, since light rays could not pass through it. This structure takes the nutrients from the aqueous humor and not from the blood.
8. Synchronize the hearts
Another curiosity about the functioning of the human heart has to do with the synchronization of the heartbeat between several people. This occurs in choirs, as Dr. Bjorn Vickhoff of the Sahlgrenska Academy of the University of Gothenburg put it in an essay.
When singing, air is exhaled and the pulsations go down; in the pauses you inhale and the pulsations rise. In choirs everyone should breathe in and out at about the same time and this makes their hearts work in wonderful synchrony.
9. The broken heart
The heart can be broken and not metaphorically, but literally. It's called broken heart syndrome and it occurs when someone has such a strong emotional impact that it causes this effect. It is the consequence of an avalanche of stress hormones.
The symptoms of a broken heart are very similar to those of a heart attack, with the difference that the organ is in perfect condition when the rupture occurs. It is very rare that it leads to death.
10. Cardiovascular diseases over time
The first known case of heart disease was identified in an Egyptian mummy dating back 3,500 years. Nowadays, cardiovascular diseases are the leading cause of death in higher-income countries.
A fact that should be part of the curiosities about the functioning of the human heart is that most heart attacks occur on Mondays. Likewise, Christmas is the date when these types of episodes are most recorded.
The heart, the body's pump
The heart. Location. Cavities Circulation between cavities. Irrigation and intervention. Cardiac conduction system. Curiosities Read more "