Interlab? Respiratory System, 2Pc (LSE) This life sized relief model shows the entire respiratory system from mouth and nasal cavity to alveolae, including oronasal cavity, larynx, trachea, primary bronchi and bronchial tree. The upper respiratory tract is divided along the medial sagittal plain. A magnified (150x) alveolus illustrates interchange of carbon dioxide and oxygen in great detail. Mounted on board. 53 x 38 x 6 cm. Weight: 2.2kg. Qty :