The Axis Scientific 31” Muscle Painted and Numbered Human Skeleton Model with Muscle Origin and Insertion Points is a miniature anatomy model of the human skeleton. The skeleton model has a full range of articulation in major joints: shoulder elbow wrist hip and knee. The ankle joint has minimal articulation. The red markings on the model signify the muscle origin points while the blue markings indicate muscle insertion points. This anatomically correct skeleton model stands at 31” tall and includes a removable base stand making it perfectly compact for display and study anywhere. This high-quality skeleton was designed by medical professionals and is perfect for orthopedics physical therapy and medical school.