This dual model features a 150X enlarged lung lobule and additionally a 1,000X enlarged alveolus. The lung lobule features representations of the pulmonary arteries & veins, as well as bronchial branches. The alveolus model shows detailed representations of the capillary to pulmonary venules, pulmonary arteriole to capillaries, smooth muscle, elastic fibers, and epithelial cover. Key anatomical features are labeled and correspond to accompanying key card. Each model is mounted on a stand with base and made exclusively from high quality medical PVC.