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( Pulmonary vein)
The four pulmonary veins carry oxygen-rich blood from the lungs to the left atrium of the heart. They are the only veins in the post-fetal human body that carry oxygenated (red) blood. They are four in number, two from each lung, and are destitute of valves. They are They commence in a capillary net-work upon the walls of the air sacs, where they are continuous with the capillary ramifications of the pulmonary artery, and, joining together, form one vessel for each lobule. These vessels uniting successively, form a single trunk for each lobe, three for the right, and two for the left lung.
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Pulmonary vein Subcategories
Pulmonary vein Articles
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