Human Respiratory System with Magnified Alveolus (2849) A relief model of the respiratory system, including the oronasal cavity, larynx and H62trachea, primary bronchi and bronchial tree. The upper respiratory tract is sectioned along the medial sagittal plane. An alveolus with blood vessels (about 150X life size) is shown with excellent internal detail. Mounted on base. Size: 53x38x6 cm Weight: approx. 2200 g Qty :