define pulmonary veins
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- Pulmonary vein: One of four vessels that carry aerated blood from the lungs to the left atrium of the heart. The pulmonary veins are the only veins that carry bright-red oxygenated blood. Last Editorial Review: 5/13/2016. Back to MedTerms online medical dictionary A-Z List.
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Definitions &Translations Vein. In the circulatory system, veins are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart.
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Pulmonary Arteries and Veins Function. While veins usually carry deoxygenated blood from tissues back to the heart, in this case, pulmonary veins are among the few veins that carry oxygenated blood instead. Oxygenated blood from the lungs is circulated back to the heart through the pulmonary veins that drain into the left atrium.
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- pulmonary circulation. the circulation of blood to and from the lungs. Deoxygenated blood from the right ventricle flows through the right and left pulmonary arteries to the right and left lung.
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- The pulmonary veins then enter your heart through the back side of your left atrium. The blood vessels that drain each of your lungs look very much like a tree lying on its side. The horizontal trunk of the tree would be formed by the superior and inferior pulmonary veins.
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- An inferior and superior vein drains each lung, so there are four veins in total. The veins are fixed to the pericardium. At the root of the lung, the right superior pulmonary vein lies in front of and a little below the pulmonary artery; the inferior is situated at the lowest part of the lung hilum.
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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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Venous thrombosis Venous thrombosis. A venous thrombus is a blood clot (thrombus) that forms within a vein. Thrombosis is a term for a blood clot occurring inside a blood vessel. A common type of venous thrombosis is a deep vein thrombosis (DVT), which is a blood clot in the deep veins of the leg. If the thrombus breaks off (embolizes) and flows towards the lungs, it can become a pulmonary embolism (PE), a blood clot in the lungs.
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venous vein. 1. Any of the blood vessels that carry blood toward the heart. Veins are thin-walled and contain valves that prevent the backflow of blood. All veins except the pulmonary vein (which returns to the heart from the lungs) carry blood having low levels of oxygen. 2.
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Pulmonary Embolism  [en EspaÃ±ol] What is pulmonary embolism? Pulmonary embolism is the sudden blockage of a major blood vessel (artery) in the lung, usually by a blood clot . In most cases, the clots are small and are not deadly, but they can damage the lung. But if the clot is large and stops blood flow to the lung, it can be deadly.
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pulmonary vein The total lung capacity is decreased and the RV/TLC ratio is normal. pulmonary vein any of the four large veins (two right and two left branches) that carry oxygenated blood from the lungs to the left atrium of the heart.
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pulmonary vein the circulation of blood to and from the lungs. Deoxygenated blood from the right ventricle flows through the right and left pulmonary arteries to the right and left lung.
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- Noun. 1. pulmonary valve-a semilunar valve between the right ventricle and the pulmonary artery; prevents blood from flowing from the artery back into the heart. semilunar valve-a heart valve with cusps shaped like half-moons; prevents blood from flowing back into the heart. 1  Facebook.2  Twitter.ulmonary valve-a semilunar valve between the right ventricle and the pulmonary artery; prevents blood from flowing from the artery back into the heart.
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THE HEART AND HEART DISEASE The pulmonary vein is the only vein to carry oxygenated blood which is on its way to the heart from the lungs. The diagram also shows you that the right and side of the heart, both atrium and ventricle, contains only deoxygenated blood.
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What Is the Difference Between an Artery & a Vein? Pulmonary Vein. The four veins that carry blood from the lungs to the heart are called pulmonary veins. Unlike other veins, the blood in pulmonary veins is full of oxygen. The blood is pumped in to the the left atrium of the heart and then circulated throughout the body by arteries.
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pulmonary embolism pulmonary embolism. A condition in which an embolus (blood clot, formed in a vein) breaks off and blocks a pulmonary artery which supplies blood to the lungs. It can result in pain, breathlessness, and sudden death.
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PULMONARY TRUNK Noun. 1. pulmonary trunk-the artery that carries venous blood from the right ventricle of the heart and divides into the right and left pulmonary arteries. truncus pulmonalis.arteria pulmonalis, pulmonary artery-one of two arteries (branches of the pulmonary trunk) that carry venous blood from the heart to the lungs.oun. 1. pulmonary trunk-the artery that carries venous blood from the right ventricle of the heart and divides into the right and left pulmonary arteries. truncus pulmonalis.
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Pulmonary Arteries and Veins There are 4 total pulmonary veins—with 2 pulmonary veins coming from each lung, left and right—that empty into the left atrium of the heart. Two pulmonary veins emerge from the hilus of each lung, and each pulmonary vein receives blood from 3-4 bronchial veins apiece before draining into the left atrium.
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Vein The pulmonary veins carry relatively oxygenated blood from the lungs to the heart. The superior and inferior venae cavae carry relatively deoxygenated blood from the upper and lower systemic circulations, respectively. The portal venous system is a series of veins or venules that directly connect two capillary beds.
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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.[1] The term pulmonary circulation is readily paired and contrasted with the systemic circulation.
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Pulmonary Veins: Function, Definition & Anatomy Your pulmonary veins are a group of blood vessels that drain oxygenated blood from your lungs and return it to your heart. The word 'pulmonary' comes from the Latin root 'pulmo,' meaning 'of or relating to the lungs.'.
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- pulmonary trunk. n. An arterial trunk with origin from the right ventricle of the heart, and dividing into the right and left pulmonary arteries, which enter the corresponding lungs and branch with the bronchi.. An arterial trunk with origin from the right ventricle of the heart, and dividing into the right and left pulmonary arteries, which enter the corresponding lungs and branch with the bronchi.
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Vein In the circulatory system, veins (from the Latin vena) are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart. Veins are less muscular than arteries and are often closer to the skin.
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Pulmonary circulation In the capillaries the blood takes up oxygen from the air breathed into the air sacs and releases carbon dioxide. It then flows into larger and larger vessels until the pulmonary veins (usually four in number, each serving a whole lobe of the lung) are reached. The pulmonary veins open into the left atrium of the heart. Compare systemic circulation. zoom_in.