Function Features:
The model depicts a human heart, approximately 1:1 scale, in a diastolic state. It is placed on a stand in its normal physiological position. The model is cut transversely along the root of the pulmonary artery, showing the internal structures of the left and right atria and the pulmonary artery, as well as the semilunar valves. The model is also cut longitudinally and obliquely along the atria, showing the internal structures of the left and right ventricles. The right atrium shows the orifices of the superior and inferior vena cava, the inferior vena cava valves, the orifice of the coronary sinus, the coronary sinus valves, the atrioventricular orifice, the foramen ovale, and the orifice of the right atrioventricular valve. The right atrium also shows the orifices of the left and right pulmonary veins. The right ventricle shows the supraventricular crest, the tricuspid valve, the aortic cone, the cord, the papillary muscles, the trabeculae, and the pulmonary valve. The left ventricle shows the mitral valve, the chordae tendineae, the papillary muscles, the trabeculae, and the aortic valve. The model also shows the interatrial and interventricular septums. The heart is enlarged to show the external shape and related vessels and branches. It also shows the atrial appendage, myocardial fibers, ventricular trabeculae, atrial incisions, fat, and the aortic ligament. The model also shows the left and right coronary arteries and their branches, the coronary sinus and its branches, the ascending aorta and the branches of the aortic arch, the superior and inferior vena cava and their branches, and the pulmonary veins and arteries. The walls of the left and right ventricles and the cut surfaces along the arterial pulse can be disassembled.