4D dimensional take-apart model, 1: 3 lung The anatomical model assumes the mean sagittal section as an anatomical structure and provides an understanding of the lung structure. The human lung model has 21 removable models to show the internal structure of the human lung model, ideal for classroom teaching, professional learning, research presentations and laboratory presentations. The Cardiac Bisection System of the Human Lung Model System can display the atria, valves and ventricles. Model of the human lung system with the larynx bisected and the diaphragm shown. The texture of each functional area of the lung model is clear, which is conducive to quickly identifying the location and structure of the human lung and respiratory system model. Simultaneously display the structure of trachea and subclavian artery, bronchial tree and vein, aorta, vena cava, esophagus and pulmonary artery, Model size: 11.4x10.6x20cm/4.4x4.1x7.8".