The 2613 Master Set of Body Systems set/6 illustrate the six major systems of the human body:

Circulatory, Nervous, Respitory, Urinary, Digestive, Endocrine. Includes markable model of durable vinyl and Model Activity Guide which includes background information, basic understandings, activities, a glossary, and a key to model structures. Full-color transparencies and a blackline diagram master of the model are also included in each Activity Set.