Vertebral column in profile view on the left side. The anterior part of the column looks to the left of the drawing, the posterior part, to the right. It comprises 7 cervical vertebrae, 12 dorsal or thoracic vertebrae, 5 lumbar vertebrae, 5 sacral vertebrae welded and 4 to 5 fused coccygeal vertebrae. This view highlights the three natural curvatures of the spine: 1 cervical lordosis, hollow in the neck - 2 kyphosis, rounded upper back 3 lordosis or lumbar lordosis, arch of the hollow of the kidneys.