A beautifully detailed depiction of the structures involved in gaseous exchange, the model clearly shows the alveolar epithelium, where oxygen is taken in and carbon dioxide is given off, as well as the alveoli, intact and sectioned, to reveal the capillary network.

• Five year manufacturer's warranty
• Enlargement (150×) shows lobule's extensive details
• Detailed depiction of structures involved in gaseous exchange

Arteries and veins are displayed with both bronchi and bronchioles connecting to alveolar ducts, color-coded elastic fibers, smooth muscle, mucous membranes, and cartilage.

The back of the model diagrams the circulation within the lobule and the pleura.