Anatomically, the model can be used to understand the structure of the bronchial tree and the division of the lungs into lobes and segments.
The bronchial tree begins where the trachea divides into two main bronchi. Each main bronchus then divides into lobe bronchi. Since the right lung consists of 3 lobes, while the left lung only consists of 2 lobes, there are 3 lobe bronchi on the right side, while on the left side there are 2.
Each lobe bronchus subsequently divides into segmental bronchi that supply the individual lung segments.
On the model, the individual segment bronchi are cut where the segment has been removed. To easily match segment with segmental bronchus, the two cut ends of the segmental bronchus are marked with the same color (see picture on the left).
When the lungs are assembled, the furrows that divide the lungs into segments (respectively fissura horizontalis and fissura obliqua) are visible.
Between the two lungs is the mediastinum, as well as some of the structures found here. Among other things, you can see the heart, which is removable on the model, as well as the large vessels that run to and from the heart.
Behind the trachea is the esophagus which, together with the aorta, can be followed down to the diaphragm, through which they both pass, on their way down into the abdominal cavity.
