Human Spine Anatomy. 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. In adults, the spinal cord is usually 40cm long and 2cm wide.

The lumbar region of the spine, more commonly known as the lower back, consists of five vertebrae labeled l1 through l5. Browse 1,343 lumbar spine anatomy stock photos and images available, or search for spinal cord to find more great stock photos and pictures. The notochord present in the embryonic stage is replaced by the vertebral column.