Medical prop model Anatomical human heart model teaching toolFeatures: 1. The model is about 1: 1 enlarged in the adult heart, showing a dilated state. According to the body's normal physiological position on the stent. 2. Transverse along the pulmonary artery root, showing the internal structure of the left and right atria and pulmonary artery, advocate pulse semilunar valve. Diagonal cut along the atrium, showing the internal structure of the left ventricle. 3. Right atrium showed on the inferior vena cava,