The model shows an external pulmonary lobe with a magnification of 130x. The following are represented: Segmental bronchus and its terminal branches (bronchioles) Alveolus opened on the right side Pulmonary vessels and their capillary networks Branch of a bronchial artery Pulmonary pleura Connective tissue septum on the left side Single opened alveolus with surrounding capillary network with a magnification of approx. 1000x on the rear side A graphic image  on the stand of the model shows the structure of the air way in the lungs up to the alveolus.