Medical Terminology: An Illustrated Guide, 7e by Barbara Janson Cohen uses a stepwise approach to learning medical terminology. Part 1 describes how medical terms are built from word parts; Part 2 introduces body structures, diseases, and treatments; and Part 3 describes each body system. Individual chapters also build on knowledge in stages: the Key Terms sections list the terms most commonly used; more specialized terms are included in a later section entitled “Supplementary Terms.”