Pulmonary vein three and five in the healthy population. The two left lobar veins may be united as a single pulmonary vein in about 25% of people; the two right veins may be united in about 3%. The pulmonary veins play an essential role in respiration, by receiving blood that has been oxygenated in the alveoli and returning it to the left atrium. As part of the pulmonary circulation they carry oxygenated blood back to the heart, as opposed to the veins of the systemic circulation which carry deoxygenated blood. A rare genetic defect of the pulmonary veins can cause them to
Effects of tightlacing on the body many complications while the body is tightlaced, becoming severed due to the location of the ribs as a result of the tightlacing, and that the liver would become enlarged or displaced. Another possibility was mechanical congestion, the result of the pressure placed on the inferior vena cava, thus obstructing the flow of blood. According to Dr. Tse-Ling Fong, liver cancer is often the result of this vein being blocked. The blocked vein is not able to filter out the bad blood in the liver resulting in a cancerous infection. However, corsets would not have had a drastic effect on the