We all know that the heart is one of the most important organs in our body, known as the human body's "engine", the blood in the body is relying on the power of this "engine" to circulate in the body, and the power comes from the heart through the contraction and diastole, and then the blood carries oxygen and nutrients to the organs and organs, just as we want to transport water from the well to the field, as the heart is like the pump. Diastole, and then the blood carries the oxygen and nutrients transported to the various organs and organs, just as we want to transport the water in the well to the field, the heart is like the pump. Once the heart stops beating, the organs and organs will immediately experience a lack of oxygen, especially brain cells, lack of oxygen for more than 4 minutes will be irreversible damage, meaning that people will "die", so the importance of the heart can be seen.

So where does the energy of the heart come from? In fact, the heart, like other organs, is also supplied with energy through the oxygen and nutrients in the blood. There are many blood vessels distributed on the surface of the heart and in the muscle, which deliver oxygen and nutrients to the cardiac muscle cells, dyeing them red and converting them into energy to maintain the contraction and diastole of the heart. One of the arteries is what we often call the coronary arteries, if the coronary arteries undergo atherosclerosis, it is what we often call coronary heart disease, and acute blockage of the coronary arteries, there will be an acute myocardial infarction, and if it can not be treated in time, the mortality rate is very high.

Unlike other organs that get their blood supply when the heart contracts, the heart itself gets its blood supply when it is in diastole, because the contraction of the heart muscle during systole compresses the blood vessels in the muscle as well, which is not conducive to the supply of blood, whereas the blood vessels are just about ready to fill up during diastole. This makes it clear that in fact, when the heart is tachycardic, the heart itself is not conducive to blood supply due to the prolonged contraction of the heart muscle.

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The answer to this question begins with our blood circulation.

And what is circulation?

Circulation is the exchange of blood in the closed heart and blood vessels, where our heart pumps the blood out, then through the arteries to the organs and tissues of our body (including the heart), through the capillaries, and finally through the veins back to the heart.

The role of the blood circulation is like that of an army, it is mainly responsible for the transportation of substances in our body.

i.e. transportation of nutrients, oxygen, metabolites and carbon dioxide.

For blood to flow and circulate it needs power and energy, just like a car needs an engine and gasoline to be able to run.

And our heart is the power organ that drives the blood flow.

Action potentials in cardiomyocytes are the initiating cause of triggering myocardial contraction and pumping

Myocardial action potentials alone are not enough; the constant, orderly and coordinated alternation of contraction and diastole of the atria and ventricles is indispensable for the heart to pump and circulate blood.

It's not enough to have an engine to make a car go, it's also necessary to have gas and a highway, you can't have one without the other.

This is why our hearts beat and why they beat.

The main source of energy for the heart is glucose, and the specific blood vessels that provide nutrients are the coronary arteries.

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The direct source of power for all human activity isATPWhile ATP is produced by glucose through the tricarboxylic acid cycle and anaerobic glycolysis, glucose in the human body can not be stored for a long time, it is stored through the conversion of glucose into glycogen, and once the body needs energy, glycogen is converted into glucose immediately for energy.

Are you asking why the heart can beat all the time on its own?

That's because the heart is autoregulated, and autoregulation is the ability to occur automatically. The parts of the heart that are in rhythm includeSinus node, atrioventricular junction, Purkinje fibers. Because the sinus node has the highest autoregulation, the whole heart beats according to the rhythm of the sinus node, and sometimes the autoregulation of other parts of the heart suddenly surpasses the sinus node and beats ahead of time, and that's what is clinically referred to as premature beats.

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It may be that lung power generates microelectricity that powers the heart, and if the lungs stop breathing, the heart will stop beating.

In medical emergencies when the heart stops beating, electric shock is used, which contains two functions, 1 to induce the heart machine to contract, and 2 with a current power supply on the body, the heart will restart beating and work continuously.

Why does the heart beat? Where does the energy needed for the heart to beat come from?

The heart is like the engine of the human body, beating all the time to ensure that the energy and nutrients needed by various organs of the body can be a steady stream of energy and nutrients to be delivered to the organ, so why can the heart maintain a certain rhythm of beating?

The heart is a myocardial organ composed of a large number of smooth muscle, from the function of cardiomyocytes can be divided into two categories, one accounted for the majority of cardiac cells, responsible for the heart's contraction and diastole, known as the work cells, and the other category of a smaller number of autoregulatory, that is, can autonomously maintain a certain rhythm to beat, and is responsible for the issuance of electrical impulses to maintain the work of the cells of the rhythm of the contraction and diastole, known as the autoregulation cells, the autoregulation cells, the heart's heart. Autoregulatory cells mainly include sinus node cells and Purkinje cells.

Physiologically, the autoregulation of the sinus node is higher than that of the Purkinje cells, and according to the principle of overdrive depression, the sinus node is responsible for the rhythmic beating of the heart, so that the rhythm of the heart in a normal person is sinus rhythm.

At rest, the heart's energy consumption accounts for about 20% of the body's energy consumption, so where does such a large amount of energy come from? To explain the source of the heart's energy, we have to mention the coronary arteries, referred to as the coronary artery, is the source of the heart's blood supply; under normal circumstances, the coronary artery consists of two branches, namely, the left coronary and the right coronary, which originate from the ascending aorta of the left coronary sinus and the right coronary sinus, respectively. At rest, the heart's blood supply accounts for about 5% of the body's blood supply.

It is the constant, non-stop beating of the heart that ensures that there is a constant, sufficient supply of arterial blood in the coronary arteries for the heart's own consumption, thus guaranteeing a large supply of the oxygen and energy substances needed for the heart to beat.

The heart beats because it is lined with autoregulatory cells, and the energy it needs to beat comes from a constant supply of blood from the coronary arteries.

The heart's automatic beating is powered by cells in the heart's sinus node, which can automatically depolarize and repolarize, rhythmically sending impulses along the fibers of the atrioventricular bundle to the atrioventricular node, and then by the left and right bundle branches to the heart's cardiac muscle, triggering the heart's rhythmic beating.

This power and working mechanism can be simply compared like this: the sinus node cells are the power generating initiator, which is responsible for sending out impulse potentials; the atrioventricular bundle and the left and right bundle branches are the cable wires, which are responsible for conducting the impulse potentials from the sinus node along the cable wires to the far side, and the cardiomyocytes are the effectors, which cause contraction of the heart after receiving stimuli conducted by the cable wires.

Whether it is a lesion of the sinus node or a lesion of the atrioventricular bundle and the left and right bundle branches, which is equivalent to an abnormality in the cable line that generates electricity and conducts it, the human body will experience cardiac arrhythmia and even sudden death. For example, the sinus node strike quit, the heart's power source is gone, the heart stops working, medically called sinus arrest; if it is the sinus node sends out electrical impulses too often or too slow, there will be rapid-type arrhythmia, such as sinus tachycardia and sinus bradycardia; if there is a problem with the cable line, broken, there is an atrioventricular block, or even cardiac arrest; if the cable line is shorted, there can be a variety of electrical currents running around, and even sudden death. Current can run amok, and various types of tachyarrhythmias can occur, such as tachycardia, ventricular fibrillation, and atrial flutter.

The heartbeat is controlled by the hypothalamus, the nervous system, the adrenal hormones, and of course the energy comes from the blood supply, otherwise why would you hang up in a heart attack!

This is because the cardiac muscle cells in the heart have a contractile function. Conduction of electrical signals in the heart: Sinus node -> AV node -> Purkinje fibers form a special electrical conduction system that transmits "instructions" for the heart to beat. This causes the atrial and ventricular muscles to contract. The beating of the heart is actually the movement formed by the contraction and diastole of the cardiac muscle cells, which is manifested outwardly as the beating of the heart, and is also called beating.

A heartbeat is the outward manifestation of its work.

Our body is a whole, every minute and every second of breathing, activity, thinking, are inseparable from the joint efforts of countless organ cells, their respective duties to ensure that the links will not go wrong, this process is not carried out out in thin air, any "force" need to consume energy, which is the role of the blood, but the human body is really too big to be able to But the human body is too big, to be able to blood sufficient and timely operation to the major organs, this is a more important "work", and the heart is responsible for this part of the work.

Reasons why the heart would beat?

This is because there is a special conduction system in the heart.

This conduction system is made up of cardiac muscle cells, which have the property that they can automatically send out a rhythmic bioelectric current, and this starting point (pacing point) is the sinus node, and every time an excitation is generated, it rapidly ripples throughout the heart, causing the atria and ventricles to begin to contract with excitation as well, but this contraction can't go on forever so it is followed by diastole, and every time this process of contraction and diastole is repeated, the heart beats Once.

What is the energy required for the heart to beat?

This energy refers to blood.

There are two main ways that organisms take in nutrients: eating and breathing.

However, the nutrients contained in both require the blood to be carried as a carrier, and then according to the blood flow throughout the body, for the major organs and cells to utilize.

This is why cardiovascular disease is so scary. Originally, the narrowing and blockage of blood vessels is not a big deal, especially with the natural aging of blood vessels in the senior population, but this change affects the flow of blood, leading to ischemia of the heart muscle or brain, which can lead to necrosis, causing a range of abnormal symptoms and risks.

I hope my answer helps you!

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What powers the heart to keep beating? To figure this out, let's first look at the international standards for determining a person's death. Traditionally, to determine whether a person is dead or not, we look at whether the heart is still beating, whether he or she is still breathing, whether the pupils are dilated, and whether the body temperature and muscles are stiff, etc. In other words, "cardiac death" is traditionally used as the criterion for death. In other words, "cardiac death" has traditionally been used as the criterion for determining a person's death. However, in 1968, the Special Committee on the Review of the Definition of Death at Harvard University proposed the following diagnostic indicators for brain death: (1) cessation of spontaneous respiration and the need for continuous artificial respiration. It is the first indicator of clinical brain death; (2) irreversible deep coma. There is no voluntary muscle activity; there is no response to external stimuli, but spinal reflexes can still exist at this time; (3) disappearance of nerve reflexes in the brainstem; (4) dilated or fixed pupils; (5) disappearance of brain waves; (6) complete cessation of cerebral blood circulation. According to this definition of brain death, if a person once suffers brain death, then the person's heart can still maintain the heartbeat for a certain period of time after using a ventilator and related medications, at which time the pupils are always dilated. If all the functions of the patient's brain irreversibly fail and are permanently lost, that is, after the nerve death of the brain, the heart will eventually stop beating. Therefore, in this sense, brain death is more scientific than heart death.

From what has been stated above, is the beating of the human heart the result of the autonomic excitation and stimulation of the heart machine cells? Obviously this is only a superficial phenomenon, and if this is the case, then how can one explain the phenomenon of death occurring in some people who do not have heart disease? Therefore, there is something outside of the heart-machine cells that is capable of swaying the autoregulation of the heart-machine cells. What is this? The heart has nerve cells, and the nerve cells lead to the nerve center cells of the brain, so it is the nerve center cells of the human brain that are the central zone of the human body. It is possible for the nerve center cells of the human brain to give certain instructions to the heart machine cells.

This is just from the instruction that the nerve center cells of the human brain may control the movement of the heart machine cells. But why do the heart machine cells perform contraction and expansion movements one after the other? What is its power source? I personally believe that contraction and expansion is a universal law of the universe. One contraction and one expansion is the way of literature and martial arts, and at the same time, one yin and one yang is the way. Yang is expansion and Yin is contraction, which is theHeat expands and contracts, the way of yin and yang. Not only does our heart move in this way, but so does the center of our galaxy, and so does the center of our universe. We can think of the center of the universe as the heart of the universe, and then the heart of our universe is in constant motion of expansion and contraction. In this sense, the driving force of our heartbeat comes from the universal yin-yang law of the heartbeat of the universe.

A yin and a yang is called the way, happy and aware of life, so do not worry.