Interlab?Mediastinum, Nat Size 5Pc (LSE) Our detailed model includes a 2-part heart with an interior view of the chambers and valves. Remove the sternum and thymus to expose the pericardial sac and major pulmonary and systemic vessels. The trachea and esophagus are shown entering the mediastinum through the superior thoracic aperture. The inferior thoracic aperture is delineated from the diaphragm musculature. 40 x 26 x 30 cm. Weight: 2.3kg. Qty :