This interrupted case study is designed to help students understand the anatomy and physiology of the digestive system. It follows the case of a toddler who swallows magnetic marbles that become lodged in the gastrointestinal (GI) tract. Students explore the anatomical sequence of digestive organs as well as the structural layers and motility of the GI tract. They then apply this knowledge to interpret the child’s symptoms and test results. Adaptable for high school through lower-level undergraduate courses, the case study is suitable for a variety of instructional formats (online, hybrid, or in-person) and could be integrated into units on anatomy and physiology, general biology, health sciences, or allied health.