Mini Lumbar Vertebrae with Sacrum & Coccyx and Herniated Disc, These mini vertebrae replicate the vital aspects of the lumbar spine, including the sturdy vertebral bodies, transverse processes, and the distinctive spinous process that extends from the rear. Despite their reduced size, these models illustrate the vertebral column's load-bearing role. The compact models of the sacrum and coccyx showcase their positioning at the base of the vertebral column. The sacrum, formed from the fusion of five vertebrae, forms the back of the pelvic girdle, while the coccyx, or tailbone, completes the column's structure.