Pathways of organism circulation and pulmonary circulation

Systemic circulation: left ventricle (heart), aorta, arteries of all levels throughout the body, capillary network, veins, superior and inferior vena cava, right atrium (heart).

Pulmonary circulation: right atrium (heart), right ventricle, pulmonary artery, capillary network in the lungs, pulmonary veins, left atrium (heart).

When the ventricles contract, bright red blood (arterial blood) containing more oxygen and nutrients is exported from the left ventricle, through the aorta and its branches at all levels, to the capillaries of all parts of the body, where the exchange of substances and gases in the tissues is carried out, and the blood becomes a slightly purple blood (venous blood) containing tissue metabolites and more carbon dioxide, and then through the veins at all levels, and finally flows into the superior and inferior vena cava and flows back to the right atrium. The blood circulation of the above path is called systemic circulation, also known as the macrocirculation. The main characteristic of the systemic circulation is that it travels a long distance and travels over a wide range, nourishing the whole body with arterial blood and transporting metabolites and carbon dioxide back to the heart.

Systemic circulation. Left ventricle – aorta.

Arteries of all levels throughout the body – capillaries throughout the body.

Veins of all levels – superior and inferior vena cava – right atrium.

Pulmonary circulation. Right ventricle - pulmonary artery - pulmonary capillaries - pulmonary vein - left atrium.

The left atrium is connected to the pulmonary veins and flows arterial blood, and the left ventricle is connected to the aorta.

The right atrium is connected to the superior and inferior vena cava. The right ventricle is connected to the pulmonary artery and flows venous blood.

Venous and arterial blood change each other – just as they pass through the capillaries.

Passing through the lungs: The oxygen level becomes high.

Whole body: Oxygen levels become low.

Organs: Pulmonary Circulation: Lungs, Heart.

Systemic circulation: heart, organ of the whole body.

If you don't understand, please ask.

All hands played, I hope it helps you.

This issue focuses on the blood flow pathways of the body's systemic and pulmonary circulation.

<> first of all, the destination of the blood is different, and the main difference between the two systems is that the systemic circulation goes to and from the cells of the body, while the pulmonary circulation goes to and from the oxygen exchange surface of the lungs; Each circulatory subsystem forms a circuit, and the two are connected by the heart. involves the flow of blood from the heart to the cells of the body and back again, whereas the pulmonary circulation, i.e., the smaller circulation in the diagram, involves the flow of blood from the heart to the lungs and back again.

There is also the difference in blood oxygenation, unlike the systemic circulation, the pulmonary circulation does not provide nutrients and oxygen to the cells. Rather, it serves the purpose of blood reoxygenation. As oxygen-deprived blood returns from the body's cells to the heart through the body's circulation, it is sent to the lungs.

The blood here absorbs oxygen and then returns to the heart for systemic distribution. As a result, the blood leaving the heart is in a different oxygenated state, depending on the system it is in; Blood leaving the heart through systemic arteries is oxidized, and the same blood returns to the heart in a deoxygenated state through systemic veins. It then leaves the heart through the arteries of the pulmonary circulation, travels to the lungs, and returns as oxygenated blood through the pulmonary veins.

There is also the difference in the heart chambers, in order to keep the oxygenated blood returning from the lungs separate from the oxygenated blood returning from the body, the heart is made up of four chambers that form two different sides. In his essay "The Right Side of the Heart", Dr. Gary Thibodo points out: anatomy and physiology; Receives deoxygenated blood from the cells of the body into a chamber called the right atrium and delivers blood to the lungs through a chamber called the right ventricle, through which the blood enters the lung circulation.

The left atrium of the heart receives oxygenated blood from the lungs and carries blood through the left ventricle to the cells of the body, through which the blood enters the systemic circulation. In this way, the two subsystems of the circulation remain distinct from each other, and all the blood is forced to circulate through the lungs before being able to circulate back to the system, ensuring optimal oxygenation.

There is also a different pathway, and the systemic circulation begins in the left ventricle. Blood beats out of the left ventricle and flows through the aorta and several arterial branches derived from it, sending blood to the corresponding organs. Pulmonary circulation begins in the right ventricle.

Venous blood is pulsed out of the right ventricle and through the pulmonary artery to the capillary network around the alveoli, where it rejects carbon dioxide, absorbs fresh oxygen, transforms venous blood into arterial blood, and then flows back to the left atrium through the pulmonary vein. Blood from the left atrium flows into the left ventricle and spreads throughout the body through the large circulation. In this way, the blood continues to run through the systemic circulation and pulmonary circulation, completing the important task of blood circulation.

Systemic circulation. Here's how:Blood from the left atrium enters the left ventricle, and the heart contracts to pump blood from the left ventricle into the aorta.

The aorta carries blood to all levels of arteries and capillaries throughout the body.

It enters the veins through the capillaries, then into the superior and inferior vena cava, and finally into the right atrium.

Pulmonary circulation. Here's how:Blood enters the right ventricle from the right atrium and through the right ventricle into the pulmonary artery.

It then enters the left and right pulmonary veins through the capillaries of the lungs, and then enters the left atrium through the pulmonary veins. The systemic circulation is arterial blood and the pulmonary circulation is venous blood.

The role of blood circulation.

The main significance of blood circulation is to ensure the body's metabolism.

The blood circulating in the human body can transport nutrients throughout the body and collect waste products from the body and remove them from the body. When blood flows out of the heart, it carries nutrients and oxygen throughout the body; When the blood flows back to the heart, it in turn removes carbon dioxide produced by the body.

and other waste products, which are transported to the excretory organs and excreted from the body.

Blood also protects the body by producing a special protein called "antibodies". Antibodies can adhere to microorganisms and prevent them from moving. As a result, other cells in the blood surround, engulf, and destroy these microorganisms.

The blood is also able to clot into lumps, helping to plug bleeding wounds and prevent large amounts of blood from being lost and microorganisms from entering.

The above content refers to the Encyclopedia - Pulmonary Circulation.

Encyclopedia - Body Circulation.

This issue focuses on the blood flow pathways of the body's systemic and pulmonary circulation.

Systemic circulation: starting from the left ventricle, blood flows from the left ventricle through the aorta and branches at all levels to the capillaries of the whole body, where the blood exchanges substances with the surrounding tissues and cells, and transports oxygen and nutrients to tissues, bacteria, surrounding tissues and cells The metabolites produced enter the blood with the interstitial fluid, so that the bright red arterial blood becomes dark red venous blood, and then through the small and middle veins, and finally returns to the right ventricle from the superior and inferior vena cava and the coronary sinus of the heart wall.

Pulmonary circulation: starting from the right ventricle, the blood from the right ventricle through the pulmonary artery and branches at all levels to the capillaries around the alveoli, where gas exchange, carbon dioxide in the blood into the alveoli, oxygen in the alveoli into the blood, so that venous blood into arterial blood, and then through the pulmonary vein into the left atrium.

In systemic circulation, blood flows from the left ventricle into the aorta, then into the arteries throughout the body, the capillary network, the veins, and finally to the superior and inferior vena cava, and back to the right atrium.

Systemic circulation: left ventricle - aorta - arteries of all levels - capillaries - veins of all levels - superior and inferior vena cava ,—— right atrium Pulmonary circulation: right atrium - right ventricle - pulmonary artery - pulmonary capillaries - pulmonary veins - left atrium.

Arterial blood (hyperoxygenated) flow from the left ventricle and left atrium

Venous blood (hypoxenic) flow in the right atrium and right ventricle

Systemic circulation: Systemic circulation refers to the process in which blood flows from the left ventricle into the aorta, then through the arteries of the whole body, capillary network, veins at all levels, and finally collects into the superior and inferior vena cava, and flows back to the right atrium. In the systemic circulation, when blood flows through the capillary network between tissue cells, the blood and tissue cells exchange substances, transporting oxygen and nutrients for the cells to use, and at the same time transporting waste products such as carbon dioxide produced by the cells.

In the process of material exchange, the blood changes from oxygen-rich and bright red arterial blood to less oxygen-less venous blood with dark red color. Pulmonary circulation: Pulmonary circulation refers to the flow of blood from the right ventricle into the pulmonary artery, through the capillary network of the lungs, and finally from the pulmonary veins back to the left atrium.

In the pulmonary circulation, as blood flows through the capillary network of the lungs, the blood exchanges with the gas in the alveoli, and the oxygen in the alveoli enters the blood, and the carbon dioxide in the blood enters the alveoli. After the exchange of gases in the alveoli, venous blood with little oxygen and dark red color becomes more oxygenated and bright red arterial blood.

The order of the organs that they cycle through is not the same. The systemic circulation is ejected from the left ventricle into the aorta, and then through the arterial branches at all levels, to the capillaries of various organs throughout the body. The pulmonary circulation is ejected from the right ventricle from the venous blood into the pulmonary artery, through the pulmonary artery to obtain the pulmonary artery branches in the lungs, flows to the capillary network around the alveoli, passes through the pulmonary vein branches at all levels in the lungs, and then enters the left atrium through the pulmonary vein.

The systemic circulation is called the macrocirculation, and the blood is exchanged between the various cells of the body and the heart; The pulmonary circulation, called the minicirculation, is the exchange of gas between the lungs and the heart in the blood.

Systemic circulation: left ventricle - aorta - arteries at all levels of the body - capillaries of the whole body - veins at all levels - superior and inferior vena cava - right atrium.

Pulmonary circulation: right ventricle - pulmonary artery - pulmonary capillaries - pulmonary vein - left atrium.

Systemic circulation: left ventricle - aorta - arteries of all levels of the body - capillary network of the whole body - veins of all levels of the body - superior and inferior vena cava - right atrium.

Pulmonary circulation: right ventricle - pulmonary artery - pulmonary capillary network - pulmonary vein - left ventricle.

Large circulation: left ventricle, aorta and its branches at all levels, capillary network throughout the body, veins at all levels, superior and inferior vena cava, right atrium.

Small circulation: right ventricle, pulmonary artery trunk and its branches, pulmonary capillaries, pulmonary veins, left atrium.

The pulmonary artery was found. After being patrolled to the pulmonary artery to the capillaries to the pulmonary vein to the left atrium pulmonary circulation, venous blood is blood in the stool. After being channeled to the pulmonary artery to the capillaries to the pulmonary vein to the left atrium pulmonary circulation, the venous blood becomes arterial blood.

The systemic and pulmonary circulation pathways are as follows.

1. Systemic circulation: left ventricle (heart), aorta, arteries at all levels throughout the body, capillary network, veins at all levels, superior and inferior vena cava, right atrium (heart).

2. Pulmonary circulation: right atrium (heart), right ventricle, pulmonary artery, capillary network of lungs, pulmonary vein, left atrium (heart).

Systemic circulation. Left ventricle (heart) aorta.

Arteries at all levels throughout the body, capillary network, veins at all levels, superior and inferior vena cava, right atrium (heart).

Pulmonary circulation. Right atrium (heart) Right ventricle Pulmonary artery Capillary network in the lungs Pulmonary veins Left atrium (heart).

The flow of blood requires energy, which is mainly generated by the heartbeat, which in turn is the mitochondria in the cell.

Produced, so the mitochondrial content in cardiomyocytes is quite quite a lot.

Right ventricle Pulmonary artery Pulmonary capillaries Pulmonary veins Left atrium systemic circulation: left ventricle Aora Capillaries of all parts of the body Superior and inferior vena cava Right atrium Follow-up: Can you be more detailed?

Systemic circulation (macrocirculation): When the ventricles contract, fresh blood containing oxygen and nutrients (arterial blood) flows from the left ventricle into the aorta and then branches along the arteries to capillaries throughout the body.

The nutrients and oxygen in the blood are absorbed by the cells and tissues, and their metabolites and carbon dioxide enter the blood. The blood changes from bright red arterial blood to dark red venous blood. It then passes through all levels of veins and finally flows back to the right atrium through the superior and inferior vena cava.

The main characteristics of systemic circulation are: long distance, wide flow range, arterial blood nourishes all parts of the body, and its metabolites are transported back to the heart.

Pulmonary circulation (small circulation): Venous blood that circulates back to the heart from the body and enters the right ventricle from the right atrium. When the ventricles contract, blood ejects from the right ventricle, travels through the pulmonary arteries into the lungs, and then branches through the pulmonary arteries into the capillary network around the alveoli.

Through the capillary wall and the very thin alveolar wall, the blood exchanges gas with the air in the alveoli, excretes carbon dioxide, inhales fresh oxygen, and turns the venous blood into oxygen-rich arterial blood, which is then discharged through the pulmonary veins and injected into the left atrium. Blood flows from the left atrium into the left ventricle. The pulmonary circulation is characterized by:

The short distance, which passes only through the lungs, and its main function is to convert venous blood into oxygen-rich arterial blood.

What is the systemic circulatory pathway.

1. Follow the blood circulation path for the body.

When the ventricles contract, bright red blood (arterial blood) containing more oxygen and nutrients is exported from the left ventricle, through the aorta and its branches at all levels, to the capillaries of all parts of the body, where the exchange of substances and gases in the tissues is carried out, and the blood becomes a slightly purple blood (venous blood) containing tissue metabolites and more carbon dioxide, and then through the veins at all levels, and finally flows into the superior and inferior vena cava and flows back to the right atrium.

2. Pulmonary circulation.

When the ventricle contracts, blood enters the pulmonary artery from the right ventricle and reaches the pulmonary capillaries through its branches, where gas exchange takes place and venous blood becomes arterial blood.

Reflux through the pulmonary veins into the left atrium and re-entry into the left ventricle. The pulmonary artery is short and thick, about the same as the 4th thoracic vertebra, and is divided into the left and right pulmonary arteries. The left pulmonary artery is short, reaching the left hilum and dividing into upper and lower branches into the upper and lower lobes of the left lung; The right pulmonary artery is long, reaching the right hilum and dividing into 3 branches to enter the superior, middle and inferior lobes of the right lung.

The pulmonary veins are flapless, two on the left and right, and are called the left and right superior pulmonary veins and the inferior pulmonary vein, respectively. Inject into the upper posterior left atrium.