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Anonymous users2024-02-12Systemic 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. The artery then branches several times, the diameter of the tube gradually narrows, the number of blood vessels gradually increases, and finally reaches the capillaries, where the intercellular fluid is exchanged with the tissue cells.
Oxygen and nutrients in the blood are absorbed by the tissues, and carbon dioxide and other metabolites in the tissues enter the bloodstream, turning arterial blood into venous blood. The veins gradually thicken and decrease in number, until finally all the veins converge into the superior and inferior vena cava, from which blood returns to the left atrium, thus completing the systemic process.
Pulmonary circulation begins in the right ventricle. Venous blood is pulsed out of the right ventricle and travels through the pulmonary artery to the capillary network around the alveoli, where it excretes carbon dioxide, absorbs fresh oxygen, transforms venous blood into arterial blood, and then flows back to the left atrium through the pulmonary veins. Blood from the left atrium re-enters the left ventricle and spreads throughout the body through the general circulation.
In this way, the blood is continuously running through the systemic and pulmonary circulation, completing the important task of blood circulation.
Pulmonary circulation: right ventricle - pulmonary artery - capillary network in the lungs - pulmonary vein - left atrium.
Systemic circulation: left ventricle - aorta - capillary network throughout the body--- superior and inferior vena cava - right atrium.
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Anonymous users2024-02-11The human heart is a pump that promotes blood circulation, the left ventricle and the right ventricle contract at the same time, and the blood ejected from the left ventricle flows to all parts of the body through the aorta and arteries at all levels, and finally flows back to the right atrium through the superior and inferior vena cava, and this blood circulation route is the systemic circulation; Blood ejected from the right ventricle flows through the pulmonary artery to the lungs and then through the pulmonary veins back to the left atrium
So the answer is: body; Lungs.
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Anonymous users2024-02-10The blood circulation in the human body includes systemic circulation and pulmonary circulation, and the route of systemic circulation is: left ventricle, aorta, arteries at all levels throughout the body, capillaries at all levels throughout the body, veins at all levels of the body, superior and inferior vena cava, right atrium; The route of the pulmonary circulation is: right ventricle, pulmonary artery, pulmonary capillaries, pulmonary veins, left atrium, systemic circulation and pulmonary circulation are carried out at the same time, and are connected together at the heart to form a complete blood circulation route
So the answer is: systemic circulation; Pulmonary circulation
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Anonymous users2024-02-09The systemic circulatory pathways are as follows:The blood of the left atrium enters the left ventricle, and the heart contraction pumps the blood from the left ventricle into the aorta, which transports the blood to the arteries at all levels and the capillaries of the whole body, and then enters the veins at all levels through the capillaries, and then into the superior and inferior vena cava, and finally into the right atrium from the superior and inferior vena cava.
The pulmonary circulatory pathways are as follows:Blood enters the right ventricle from the right atrium, enters the pulmonary artery through the right ventricle, 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 transports carbon dioxide and other waste products produced by the body to the excretory organs and excretes them 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.
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Anonymous users2024-02-08The whole process of systemic circulation in the blood circulation: left ventricle, aorta, arteries at all levels, capillary network in all parts of the body, veins at all levels, superior and inferior vena cava, right atrium.
1. The route of systemic circulation is: left ventricle, aorta, arteries at all levels, capillary network in all parts of the body, veins at all levels, superior and inferior vena cava, right atrium;
2. The route of pulmonary circulation is: right ventricle, pulmonary artery, pulmonary capillaries, pulmonary veins, and left atrium.
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Anonymous users2024-02-07The blood circulation of the human body can be divided into two pathways: systemic circulation and pulmonary circulation, among which the route of systemic circulation is: left ventricle, aorta, arteries at all levels, capillary network of various parts of the body, veins at all levels, superior and inferior vena cava, right atrium; The route of the pulmonary circulation is: right ventricle, pulmonary artery, pulmonary capillaries, pulmonary vein, left atrium
So the answer is: systemic circulation; Pulmonary circulation
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Anonymous users2024-02-06Untie; The blood circulation pathways of the human body can be divided into two pathways: positive reflux circulation and pulmonary circulation, among which the routes of systemic circulation are: left ventricle, aorta, arteries at all levels, capillary network of all parts of the body, veins at all levels, superior and inferior vena cava, right atrium; The route of the pulmonary circulation is: right ventricle, lung artery, pulmonary capillaries, pulmonary veins, left atrium, so the answer is:
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Anonymous users2024-02-05Blood circulation is divided into two parts: systemic circulation and pulmonary circulation
Systemic circulation: left ventricle - aorta - arteries of all levels - capillaries of the whole body - veins of all levels - superior and inferior vena cava - right atrium.
Pulmonary circulation: right ventricle—pulmonary artery—pulmonary capillaries—pulmonary vein—left atrium.
Function: Transport, nutrition, defense, and immunity.
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Anonymous users2024-02-04The human heart is a pump that promotes blood circulation, the left ventricle and the right ventricle contract at the same time, and the blood ejected from the left ventricle flows to all parts of the body through the aorta and arteries at all levels, and finally flows back to the right atrium through the superior and inferior vena cava, and this blood circulation route is the systemic circulation; Blood ejected from the right ventricle flows through the pulmonary artery to the lungs and then through the pulmonary veins back to the left atrium
So the answer is: body; Lungs.
Issue.
1. If you know (and should know in middle school) that the "blood vessels" of blood circulation include arteries, capillaries and veins, you should know that the transfer of all substances occurs in the capillary segment. >>>More
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Improving hand and foot circulation should start from diet and living habits, symptomatic patients need to be diagnosed by a doctor, poor circulation, thingspast provides several ways to help the hands and feet warm up, in addition to paying attention to keeping warm, it is recommended to develop good eating habits, eat less cold food, reduce salt intake, and do not drink too much water before going to bed. For patients who have been in an air-conditioned room for a long time, it is ideal to set the air-conditioning temperature at 25 degrees, and add a jacket to keep warm. For people who are prone to cold hands and feet, it is best to use skin care lotion or baby oil to rub their hands and feet before going to bed, which not only takes care of the skin, but also helps blood circulation and reduces the sequelae of cold hands and feet. >>>More
Systemic circulation: left ventricle (heart), aorta, arteries of all levels throughout the body, capillary network, veins, superior and inferior vena cava, right atrium (heart). >>>More
<> explanation: the blood circulation route is shown in the figure: blood changes from venous blood to arterial blood occurs in the capillary network around the alveoli during the pulmonary circulation Blood changes from arterial blood to venous blood in the systemic circulation Therefore, the blood in the human body changes from arterial blood to venous blood after the systemic circulation >>>More