Modelled according to nature, in SOMSO-PLAST®. Flexibly mounted, showing the arteria vertebralis, the spinal cord and the spinal nerves leaving it, and the connected ganglion cells. Consisting of occipital bone, cervical, thoracic, and lumbar vertebrae, sacrum and coccyx as well as iliac wings. The pelvis (axle of the femur joint) is mounted so that it is either flexible or fixed in the upright position. On a stand and green base.