Lumbar, sacral, and spinal nerve model The human lumbar spinal column Consists of the 5 lumbar vertebrae with intervertebral discs, sacrum with flap, coccyx, spinal nerves and dura mater of spinal cord size: 11 * 11 * 35cm 12pcs/ctn 52 * 52 * 38cm 15.2/9.6kgs Lumbar, sacral, and spinal nerve model