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Points in detail: Model structure, the model to adult heart is about 1:1, went into a state of relaxation. According to the human body normal physiological position on stents. Along the crosscutting, pulmonary artery root around in the internal structure of atrium and the pulmonary artery, vein semilunar valve. Along the longitudinal oblique atrial do, left and right ventricular internal structure. Right atrium and shown on, inferior vena cava and inferior vena cava disc, the coronary sinus coronary sinus disc, garden nest egg and right atrioventricular orifice; Right atrium and shown around the lungs electrostatic maikou and left atrioventricular orifice. Right ventricular chamber on the crest, tricuspid, arterial cone, wrist, papillary muscle, meat, column and pulmonary valve; The left ventricle in mitral valve, chordae tendineae and papillary muscle, meat column and active disc. In the interatrial septum and the interventricular septum. Thickening of the heart about and belong to the external form and the related blood vessels. Room between before and after pipe status, groove; In auricle, vortex, eager trace the heart of myocardial fibers, fat, and arterial ligaments, Shown around, coronary artery and its branches; In the coronary sinus and its branch; In the ascending aorta and aortic arch of branches; In the superior vena cava and inferior vena cava and its branch; Pulmonary vein and pulmonary artery. Model of left and right ventricular wall and cut along the pulses facial can tear open outfit.