How the heart works properly 10

After receiving blood return from a vein, the heart contracts to pump blood into the arteries.

In heart failure, the ejection ability of the heart is weakened, the blood ejected out of the heart decreases, and the blood in the heart increases after the blood returns to the heart, the central venous pressure increases, the venous return is impaired, and the pressure of venous blood increases, so the jugular vein is distended, and the venous pressure of the lower limbs increases, resulting in increased capillary pressure and edema.

If you lie flat, the peripheral venous blood return will increase, increasing the amount of blood returning to the heart, and the blood in the lungs will increase, but the blood in the lungs will not return to the heart well, which will cause pulmonary edema and difficulty breathing.

At present, it is total heart failure, poor heart function, and decreased heart capacity, that is, heart failure (right heart failure), resulting in the blood that should be returned to the heart can not be effectively returned, and stagnates outside the heart (mainly the lower limbs, gravity, showing that the legs and feet are swollen and easy to dent), and the liver is a secondary organ that returns blood to the heart, and it will also be congested (its manifestation is jugular venous distention).

The inability to lie flat is pulmonary congestion, mainly due to left heart failure, and the blood that should flow back to the left heart is stagnant in the lungs, so it will show symptoms such as dyspnea. Weakened S1 indicates that the heart is not strong enough to pump enough blood into the aorta during systole to meet the body's needs. These are all in the indication of heart failure, not enough workmanship, don't dwell on these anymore, the current recommendations:

Follow your doctor's advice if the diagnosis is clear**!

Isochoric systole: When the ventricles begin to contract, the intraventricular pressure rises rapidly, and when the intraventricular pressure exceeds the intraatrial pressure, the atrioventricular valve closes, and the aortic valve is also closed, so the ventricles are in an isochoric closed state with increasing pressure. When the intraventricular pressure exceeds the aortic pressure, the aortic valve opens and the ejection phase begins.

Rapid ejection phase and slow ejection phase: In the pre-ejection phase of the ejection phase1 3 or so, the ventricular pressure rises rapidly, and the ejaculated state rents a large amount of blood, which is called the rapid ejection phase; Subsequently, the ventricular pressure begins to drop and the rate of ejection slows, a period called the slowing ejection phase.

Summary. The role of the heart is to make blood! The fluid flows through the human body and sustains life.

The heart never stops beating, it beats an average of 40 million times a year, about 300 million times in a person's lifetime. The heart is located in the middle of the chest cavity between the lungs, the lower left is the size of a clenched fist.

The heart muscle that makes up the heart is a special type of involuntary muscle that can contract (beat) rhythmically and continuously without stopping. Because the tissues and organs in the human body need an uninterrupted supply of fresh bloodshould be nourished, so the role of the heart muscle is crucial. For example, if the brain is deprived of oxygen for a few minutes, the brain will begin to die and the brain will be severely damaged.

There are four chambers inside the heart, and they form two pumps adjacent to each other, and between the two pumps is a wall of muscle called septum, which separates the left and right sides. This septum prevents the blood on the left side of the heart from mixing with the blood on the right side. The two chambers above the heart are called the atria and the two chambers below the heart are called the ventricles, which are larger and more powerful than the atria.

Blood flow between the atrioventricles is controlled by atrioventricular valves made up of fibrous tissue. Under the action of blood pressure, the atrioventricular valve forms a seal that prevents blood from backing up in the ventricles and arteriesDivision also has such valves, called avalves. Because the heart needs a lot of oxygen**, it has its own blood system** – the coronary artery system.

The work of the human heart has a certain something.

The role of the heart is to make blood! The fluid flows through the human body and sustains life. The heart never stops beating, it beats an average of 40 million times a year, about 300 million times in a person's lifetime.

The heart is located in the middle of the chest cavity between the lungs, the lower left is the size of a clenched fist. The heart muscle that makes up the heart is a special type of involuntary muscle that can contract (beat) rhythmically and continuously without stopping. Because the tissues and organs in the human body need an uninterrupted supply of fresh bloodshould be nourished, so the role of the heart muscle is crucial.

For example, if the brain is deprived of oxygen for a few minutes, the brain will begin to die, and the brain will be severely damaged. There are four chambers inside the heart, and they form two pumps adjacent to each other, and between the two pumps is a wall of muscle called septum, which separates the left and right sides. This septum prevents the blood on the left side of the heart from mixing with the blood on the right side.

The two chambers above the heart are called the atria and the two chambers below the heart are called the ventricles, which are more powerful than the atrium. Blood flow between the atrioventricles is controlled by an atrioventricular osmotic valve made up of fibrous tissue. Under the action of blood pressure, the atrioventricular valve forms a seal that prevents blood from backing up in the ventricles and arteriesDivision also has such valves, called avalves.

Because the heart needs a lot of oxygen**, it has its own blood system** – the coronary artery system.

Hello dear, I'm glad to be able to help you answer the above content for reference.

One of the reasons why the heart is able to beat without getting tired throughout a person's life is that its activity is rhythmic. How does the heart move rhythmically? This can be illustrated by analyzing the contraction of the atria and ventricles with each beat of the heart.

The specific process of each beats of the heart, simply put, is that the two atria contract, and then the two ventricles relax; Two atria then dilate, followed by contraction of both ventricles; Then relax your heart wholeheartedly. That's how the heart beats rhythmically. If the heart rate is 75 beats, the time it takes for the heart to beat each time is s(60 s 75 s).

Its central room only "works" (shrinks) the s, but "rests" (relaxes) the s; The ventricles "work" for the s, but "rest" for the s (below). It can be seen that every time the heart beats, the diastolic phase of the atria and ventricles is longer than the systolic period, so that the myocardium has sufficient time to rest, and the blood can fully flow back to the heart, so that in a person's life, the heart can keep beating without getting tired.

Cardiac cycle: When the heart relaxes, the internal pressure decreases, and the vena cava blood flows back into the heart, and when the heart contracts, the internal pressure increases, pumping blood to the arteries. Every contraction and relaxation of the heart constitutes a cardiac cycle.

In a cardiac cycle, two atria contract begins first, with the right atrium contracting slightly before the left atrium. Both ventricles contract after the atria begin to relax, while the left ventricle contracts slightly ahead of the right ventricle. In the later stages of ventricular diastle, the atria begin to contract again.

For example, if the average adult heart rate is 75 beats per minute, the average of each cardiac cycle is seconds, the average atrial systole is seconds, and the average diastolic phase is seconds. Ventricular systole averages seconds, and diastolic averages seconds. Both systolic and diastolic phases are shortened when the heart rate increases, but a greater proportion is shortened by diastole.

The contraction of the ventricles is the main force that pushes blood flow, and it is customary to take the beginning and end of ventricular contraction as a sign of the cardiac cycle, and the systolic phase of the ventricles is called systole. The diastolic phase of the ventricles is called diastole.

Remember to adopt it.

Heart valves are old, dusty, and correct channels. The healthy state of this valve allows blood to flow out from the right side. Eight trees open to the right ventricular pulmonary valve, allowing blood to flow from the heart into the lungs, where more oxygen can be absorbed.

Is it possible to roll this valve to the left to open the health state to allow blood to flow from the left atrium to the left? In your tip valve ventricles, the valve opens to allow blood to leave the heart and be pumped around the body. The heart is the structure of the heart's blood** and is known as the coronary circulatory system.

The word coronary artery comes from Latin and means crown, and the muscles that crown the heart surround the heart. Just like coronary heart disease, coronary heart disease develops when cholesterol plaque collects in the arteries that feed the heart muscle. If part of one of these plaques ruptures, it can block one of the blood vessels and cause the heart muscle to begin to die because it lacks oxygen and nutrients.

If a blood clot forms and one of the heart's arteries flows through the heart during normal operation, oxygenated blood returned from the organ enters the heart from there through two major veins, called vina caddies. Blood goes into the right atrium and through that valve into the right ventricle.

Blood then flows through the pulmonary valve into the trunk of the lungs and then through one of the two pulmonary arteries to the lungs, where they receive oxygen. Blood returns from the lungs, through four pulmonary veins, and into the left atrium at the top of the heart.

Blood then flows through the mitral valve to the left side. The ventricles, the strength of the heart. Blood flows rapidly through the aortic valve from the left ventricle, into strong wheat flour, or to a part of the aorta of our tree, starting from the heart and extending upwards from there.

Blood travels through the arteries of the labyrinth to every cell in the body.

The pacemaker cells in the heart produce an electrical signal that travels across the rest of the heart muscle, causing contractions. Due to the delay of the anterior atrioventricular node, the atria contract before the ventricles.

When the heart muscle relaxes (diastole), blood enters the atria and ventricles. Atrial contraction (contraction) clears the atria and fills the ventricles. Ventricular contraction increases the pressure in the ventricles, which first causes the valve between the atria and the contraction to close, and then causes the half-moon valve to open, pumping blood from the ventricles to the pulmonary and systemic circulation.

The heart moves blood throughout the body when it contracts, and then when it expands, the blood from the whole body returns to the heart.

It runs through the flow of blood, which passes through the heart and then uses the heart's beating to circulate the blood.

It is through each beating to replenish the ingredients in the body, and only in this way can people live a better life.

The heart is the engine of the human body, and its most important function is to pump blood, and the left heart is responsible for pumping the arteries to the aorta and its branches, supplying blood and oxygen to various important organs. The right heart is responsible for collecting venous blood, which is then sent from the right heart to the lungs, because there is oxygen inhaled in the lungs, and the venous blood must be combined with oxygen to become arterial blood again. The heart contracts in the atria and ventricles sequentially and works effectively.

The oscillometric and electrical activity of the electrocardiogram is first impulsed by the sinus node, and when the sinus node emits an electrical signal, it causes the atria to contract, and when the atria contract, the blood from the atria is pumped to the ventricles, and then the ventricles contract. When the ventricles contract, blood from the ventricles is pumped out of the heart, creating a complete electrical activity and mechanical movement.

How does the heart work? Do you know?

The human heart is one of the most difficult organs in the human body to work with. On average, it beats 72 times per minute, which is due to the stress generated by the heartbeat. As a result, blood can carry oxygen, an important nutrient, to tissues throughout the body through an extensive network of arteries, and in fact, the heart steadily pumps an average of 2,000 gallons of blood per day in the body.

Your heart is located under the ribs, between your two lungs, the heart part, the heart for the chambers acts as a double-sided pump, the right side of the heartache is filled with oxygen, the depleted blood in the organs is transported through the blood to the heart veins, the chamber on the left side absorbs oxygen, and the abundant blood is delivered to the body through the arteries, and the heart of the chamber is correct. The atrium, this chamber receives oxygen, which has been circulating around the body to consume the blood, and pumps it into the right ventricle, right ventricle, right ventricle, from the right atrium to the pulmonary artery.

The pulmonary artery senses oxygenated blood in the lungs to absorb oxygen from the left atrium. This chamber receives oxygenated blood from the lungs and pumps it to the left side. The left ventricle is the thickest of all the ventricles.

The left ventricle is the hardest part of the entire heart that pumps blood. The heart 28 trea are all located at the top of the heart.

They are responsible for receiving blood from your veins. The two ventricular carts, located at the bottom of the heart, are responsible for pumping blood into your arteries, and the atria and ventricles contract to make your heart beat and draw blood through each chamber. Before each beat, your heart fills with blood, and the contractions push the blood into the next chamber.

The contractions are triggered by the lack of trickle flow pulses that start from the sinus node located on the right wall or the true syllables owed. The pulse from the atria then travels to your heart, reaching the REA, ventricles, lymph nodes, or avenue nodes, which are located near the heart center between the kate rea and the ventricles. These electrical impulses make your blood flow at a proper rhythm.

The heart has four valves that separate each chamber, so under normal circumstances, blood doesn't flow backwards. If these valves are damaged, they can sometimes be replaced.