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Comparative Schematic: Blood Flow of the Heart
This full color medical exhibit shows two schematic diagrams demonstrating blood flow through a normal and abnormal (anomalous) heart. The anomalies depicted are a patent, or open, foramen ovale in the heart atrium walls, and an anastomosis between the pulmonary veins with a tributary of the superior vena cava. The latter anomaly causes a great amount of oxygenated blood to be carried from the lungs to the heart without reaching the body's organs and tissues.