Labeling a diagram requires applying knowledge of a concept. It is an effective form of self-assessment, enabling students to check their understanding. In the following Stomach labeled diagram, we have shown Fundus, Body, Greater Curvature, Antrum, Duodenum, Pylorus, Lesser Curvature, Cardia, Gastroesophageal Junction, and Esophagus. The purpose of a labeled diagram is very simple -- provide the context of a diagram to the viewer. Since it becomes difficult for the readers to understand the diagram without context, labeling them would be an important key here. EdrawMax and EdrawMax Online are among those tools that easily let you label your science diagrams as per your requirement. You can easily change the size of the text and even modify the font as per your needs.