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. In the following long Bone labeled diagram, we have articular cartilage, spongy Bone, epiphyseal line, red bone marrow, endosteum, compact Bone, medullary cavity, yellow bone marrow, periosteum, nutrient artery, articular cartilage, Distal Epiphysis, Metaphysis, Diaphysis, Metaphysis, and Proximal Epiphysis. With EdrawMax Online, you can easily have a team collaboration where your team members can easily label the parts of the anatomical diagram that you have created or customized.