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Left pulmonary artery. The main pulmonary artery is responsible for transporting oxygen-depleted blood away from the heart and back toward the lungs. The main artery...
Your pulmonary arteries carry oxygen-poor blood from your heart to your lungs. Your main pulmonary artery splits into your right and left pulmonary arteries.
The left main pulmonary artery is shorter than the right, [1] passes behind and downwards the descending aorta and above the left main bronchus to the root of the left lung. Above, the left main pulmonary artery is connected to the concavity of the proximal descending aorta by the ligamentum arteriosum . [ 2 ]
The left pulmonary artery extends near the left side of the aorta. These vessels go through the connective tissue covering around the heart ( pericardium ). Since the heart is on the left side of the chest, the left pulmonary artery is closer to the lung than the right pulmonary artery is.
The left pulmonary artery is more variable in number and gives off several superior lobar arteries that feed into the superior lobe before entering the hilum of the lung to branch off into inferior lobar arteries that feed the left lower lung lobe.
The left pulmonary artery is one of the branches of the pulmonary trunk, branching at the level of the transthoracic plane of Ludwig. It is shorter than the right pulmonary artery and represents a direct posterior continuation of the pulmonary trunk.
Left pulmonary artery. The left pulmonary artery passes inferiorly and posteriorly and exits the pericardium below the aortic arch at the ligamentum arteriosum. It arches over and behind the left mainstem bronchus and curves around three-fourths of the circumference of the left upper lobe bronchus.
The left pulmonary artery provides the alveolar structures in each bronchopulmonary segment of the left lung with deoxygenated blood. It is the bronchial arteries from the systemic circulation that provide oxygenated blood to the tissue of the lungs.
Circulatory circuit that carries deoxygenated blood from the right heart to the lungs for oxygenation and back to the left heart via pulmonary vessels. Structures. Right atrium, right ventricle, pulmonary trunk, pulmonary arteries, pulmonary veins. Function.
The pulmonary arteries carry deoxygenated blood from the right ventricle to the lungs, where they eventually form and extensive network of pulmonary capillaries which undergo gaseous exchange. The newly oxygenated blood returns to the left atrium of the heart via four pulmonary veins.