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Activity: Complete the Story of Blood Flow through the Heart Aorta Aortic semilunar valve Pulmonary semilunar valve Right ventricle Pulmonary veins. Tricuspid atrioventricular valve Word Bank Vena Cava Left ventricle Right atrium Pulmonary trunk/arteries Left atrium Bicuspid/mitral atrioventricular valve After being used by the major organs of the body, deoxygenated blood is transported back to the right side of the heart by two large veins known as the (1) and enters the (2) quickly passing by the open (3) enters and fills the (4) cardiomyocytes contract, produce valve, where blood then chamber. After filling, the blood and push open the (5) allow blood to exit into the Blood now enters the circulation of the lung (6) for gas exchange to occur. Once oxygenated, blood returns to the heart from the by way of four large vessels called the (7) blood then moves into the (8) (9) (10) past the (11) where blood is pumped into the systemic circuit. valve and force on the valve and past the filling open the chamber. From here, oxygenated blood is pushed valve and into the (12)