Pulmonary artery
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The pulmonary artery springs from the right ventricle at the conus arteriosus.
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It curves upward, backwards and medially and divides behind the aortic arch into right and left pulmonary arteries.
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It is enclosed along with the latter in a common sheath of the visceral part of the serous pericardium.
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Near its termination divides into two branches, it is connected to the aorta by the ligamentum arteriosus, the remnant of the fetal ductus arteriosus.
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The right pulmonary artery is a little longer than left.
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It passes under the bifurcation of the trachea to the hilus of the lung and inside the latter accompanies the bronchial tree on its ventrolateral surface.
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The left pulmonary artery passes backwards under the left bronchial lymph gland and enters the root of the left lung below the left bronchus.
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Last modified: Sunday, 16 October 2011, 11:43 AM