when the ______ contracts, blood flows into the pulmonary arteries and the branches of the pulmonary system.
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Heartbeat The blood first enters the heart into the right atrium. Blood passes from the right atrium through the tricuspid valve and into the right ventricle. When the right ventricle contracts, the muscular force pushes blood through the pulmonary semilunar valve into the pulmonary artery. The blood then travels to the lungs, where it receives oxygen. Next, it drains out of the lungs via the pulmonary veins, and travels to the left atrium.
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Pulmonary Circulation Deoxygenated blood leaves the right ventricle (RV) of the heart via the pulmonary artery. The pulmonary artery divides into two main branches, the right pulmonary artery and the left pulmonary artery, which carry deoxygenated blood to the right and left lungs respectively. In both cases deoxygenated blood is taken to the alveolar capillaries of the lungs via networks of arteries and arterioles in each lung.
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Pulmonary circulation When the lungs expand at birth, the pulmonary pressure drops and blood is drawn from the right atrium into the right ventricle and through the pulmonary circuit. Over the course of several months, the foramen ovale closes, leaving a shallow depression known as the fossa ovalis in the adult heart.
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Heart From the right ventricle, the blood is pumped through the pulmonary semilunar valve into the pulmonary trunk. The pulmonary trunk carries blood to the lungs where it releases carbon dioxide and absorbs oxygen. The blood in the lungs returns to the heart through the pulmonary veins. From the pulmonary veins, blood enters the heart again in the left atrium.
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Pulmonary circulation The fetal lungs are collapsed, and blood passes from the right atrium directly into the left atrium through the foramen ovale: an open conduit between the paired atria, or through the ductus arteriosus: a shunt between the pulmonary artery and the aorta.
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- The pulmonary circuit begins at the semilunar valve of the pulmonary trunk that carries deoxygenated blood to the lungs. The pulmonary trunk divides into left and right pulmonary arteries that go to each lung. Blood is oxygenated in capillaries that flow through the alveoli of the lungs.
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Cardiovascular system and ECG basics With each contraction, the right ventricle pumps blood through the pulmonic valve inot the pulmonary artery and to the lungs. 3. Oxygenated blood flows from the lungs to the left atrium by way of the pumonary viens. 4.It the passes through the mitral valve and inot the left ventricle. 5. As the heart contracts, blood is ejected through the aortic valve into the aorta and thus enters the systemic circulation.
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Human Physiology/The cardiovascular system   Deoxygenated blood from the body enters the right atrium. It flows through the tricuspid valve into the right ventricle. Contraction of the ventricle then closes the tri … cuspid valve and forces open the pulmonary valve.Blood flows into the pulmonary artery.fter oxygenation, blood is carried to the left side of the heart via the pulmonary veins. The left ventricle pumps the oxygenated blood through the aorta, the largest artery in the body, to the rest of the body. The aorta branches into smaller arteries, which branch into arterioles, which branch into capillaries.
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Pulmonary circulation Pulmonary circulation is the movement of blood from the heart, to the lungs, and back to the heart again. Deoxygenated blood leaves the heart, goes to the lungs, and then re-enters the heart; Deoxygenated blood leaves through the right ventricle through the pulmonary artery.rom the left ventricle the blood passes through the aortic valve to the aorta. The blood is then distributed to the body through the systemic circulation before returning again to the pulmonary circulation.
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Pulmonary circulation The pulmonary circulation is the portion of the circulatory system which carries deoxygenated blood away from the right ventricle of the heart, to the lungs, and returns oxygenated blood to the left atrium and ventricle of the heart. The term pulmonary circulation is readily paired and contrasted with the systemic circulation. The vessels of the pulmonary circulation are the pulmonary arteries and the pulmonary veins. A separate system known as the bronchial circulation supplies oxygenated blood to the tissue of the larger airways of the lung.
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How does blood flow through the human heart? What's the role of lungs? Where do oxygenated and deoxygenated...? The right atrium pumps blood through the right atrioventricular (tricuspid) valve to the right ventricle. From the right ventricle, blood flows through the pulmonary valve to the lungs via the pulmonary arteries (deoxygenated blood).In the lungs the blood becomes more red in color as it is oxygenated.Blood returns to the heart via the pulmonary veins (oxygenated blood) to the left atrium.rom the right ventricle, blood flows through the pulmonary valve to the lungs via the pulmonary arteries (deoxygenated blood). In the lungs the blood becomes more red in color as it is oxygenated. Blood returns to the heart via the pulmonary veins (oxygenated blood) to the left atrium.
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- Blood flows from the right atrium through the tricuspid valve into the right ventricle. (c). When the right ventricle contracts, the tricuspid valve closes. (d). the right ventricle expels the blood through the pulmonic valve into the pulmonary trunk.(e). the pulmonary trunk divides into a right and left pulmonary artery, each of which carries blood to one lung (Pulmonary circuit). (2) Blood flows through the pulmonary arteries to the lungs. (a).lood flows from the right atrium through the tricuspid valve into the right ventricle. (c). When the right ventricle contracts, the tricuspid valve closes. (d). the right ventricle expels the blood through the pulmonic valve into the pulmonary trunk.
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Pulmonary circulation The pulmonary circulation is the portion of the circulatory system which carries deoxygenated blood away from the right ventricle of the heart, to the lungs, and returns oxygenated blood to the left atrium and ventricle of the heart. The term pulmonary circulation is readily paired and contrasted with the systemic circulation. The vessels of the pulmonary circulation are the pulmonary arteries and the pulmonary veins. A separate system known as the bronchial circulation supplies oxygenated blood
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How Your Heart Works When the RA contracts, the blood goes through the tricuspid valve (4) and into the right ventricle (RV) (5). When the RV contracts, blood is pumped through the pulmonary valve (6), into the pulmonary artery (PA) (7) and into the lungs where it picks up oxygen.lood from the body flows: 1  to the superior and inferior vena cava, 2  then to the right atrium. 3  through the tricuspid valve. 4  to the right ventricle. 5  through the pulmonic valve. 6  to the pulmonary artery. 7  to the lungs.
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The Heart 1 Coordinated contraction of cardiomyocytes causes the heart to contract and expel blood into circulation.  The myocardium is thickest in the left ventricle, as the left ventricle must create a lot of pressure to pump blood into the aorta and throughout systemic circulation.
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How does blood travels inside our body?? As the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs, where it is oxygenated and then returns to the left atrium through the pulmonary veins.
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How Your Heart Works When the RA contracts, the blood goes through the tricuspid valve (4) and into the right ventricle (RV) (5). When the RV contracts, blood is pumped through the pulmonary valve (6), into the pulmonary artery (PA) (7) and into the lungs where it picks up oxygen. Why does it happen this way? Because blood returning from the body is relatively poor in oxygen.
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Pulmonary Valve The right ventricle then contracts and pumps the de-saturated blood through the pulmonary valve, and into the lungs. As the de-saturated blood leaves the right ventricle, it passes through the pulmonary valve, which has been closed as the right ventricle was filling.
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How the Normal Heart Works The two branches of the pulmonary artery carry blood to both lungs. In the lungs, the blood picks up oxygen and expels carbon dioxide. Reoxygenated blood (red blood) leaving the lungs enters the heart through the pulmonary veins and is carried into the left atrium.
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How does blood pump through the heart? The inferior vena cava collects blood from the body's lower half. When blood leaves these two veins, it enters the heart's right atrium. When the right atrium contracts, blood flows through a valve into the heart's right ventricle.
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Circulatory System These arteries that receive blood directly from the heart-the aorta and the pulmonary artery.: These need to be elastic because: They are relatively thin compared to their diameter. When the heart contracts, and ejects blood into these arteries, the walls need to stretch to accommodate the blood surge, storing energy. The arterial hydrostatic pressure that results from ventricular contraction is the 'systolic blood pressure' (systole is greek for contract).
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Overview The heart valves — which keep blood flowing in the correct direction — are gates at the chamber openings. Normally, deoxygenated blood from all over your body enters the right atrium and flows into the right ventricle, where it's pumped through large blood vessels (pulmonary arteries) to your lungs.
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pulmonary vein pulmonary circulation the circulation of blood to and from the lungs. Unoxygenated blood from the right ventricle flows through the right and left pulmonary arteries to the right and left lungs. After entering the lungs, the branches subdivide, finally emerging as capillaries which surround the alveoli and release the carbon dioxide in exchange for a fresh supply of oxygen.
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- The pulmonary arteries carry deoxygenated blood to the lungs, where it releases carbon dioxide and picks up oxygen during respiration. Arteries are further divided in to very fine branches called the capillaries. In structure the capillaries are very thin walled.