Here you can buy or download free Skeleton 3D models. The human skeleton or skeletal system (anatomy) is the internal framework of the body that is composed of 270 bones at birth. It provides the body structure, protection and movement and is one of the most complex skeletal systems. A rich selection of anatomically correct, realistic and scaled skeleton 3D models that are perfect for use in 3D animation, graphic design, advertising, 3D games and web is available for download.