These human plastic anatomical models of the human heart, lungs and circulatory system are terrific for the classroom or in medical offices for patient education. Our normal and abnormal colorful anatomical replicas of structures of the thorax and chest are scientifically accurate. You will find them durable, easy to use and the perfect tool for visualization of 3 dimensional structures. Understand heart and lung disease and more with these functional models. Our dis-articulating models expose underlying tissues for a closer view of deeper anatomy.