This first class model illustrates the following features: two-part larynx (removable), trachea with bronchial tree, two-part heart (removable), subclavian artery and vein, vena cava, aorta, pulmonary artery, esophagus, two lungs (front halves removable), and diaphragm. Model comes mounted on a sturdy baseboard and includes key card. Dimensions: 12-1/4 in. x 16 in. x 4-3/4 in.