HS-22 – Natural size, in SOMSO-Plast. Separates into 8 parts as follows: diaphragm with section of pericardium, thymus gland, apex of the heart, lower part of the ventricles, 4 valves, open to show the right and left atria and right and left ventricles. The proportions of the pericardium are to be seen at the corresponding intersecting lines, the plane of the valve with semilunar and sigmoid valves and the passage of the coronary vessels can be shown in their connection. On a base. Height: 29 cm., width: 18 cm., depth: 19 cm., weight: 1.3 kg.