Explore and investigate the heart with this 14 x 8 x 6 cm soft foam model. Look inside at the key parts, such as the Left and Right Atriums, Left and Right Ventricles, Aorta, Superior and Inferior Vena Cavas, and Pulmonary artery. The Activity Guide describes the functions of the parts of the heart, explains how blood flows through the heart, and lists interesting heart facts.