... cervical,thoracic and lumbar vertebrae,sacrum,coccyx and complete pelvis. features include representations of the ver tebral arteries,spinal nerve branches ... coccyx are removable to show the sacral section of the spinal cord and associated nerve branches.Mounted on a stand ... for hangingSize:90x20x20 cmWeight:approx.3000g flexible spinal column, open sacrum (anatomical model,educational model)