The five bones in the lower-back portion of the spine.
The seven vertebrae of the loin region.
the vertebrae running over the ribs to the tail
There are 5 lumbar vertebrae. The lumbar vertebrae are located between the thoracic vertebrae and the sacral vertebrae in the spinal column. The 5 lumbar vertebrae are represented by the symbols L1 through L5.
The lumbar vertebrae are the largest segments of the movable part of the vertebral column, and can be distinguished by the absence of a foramen (hole) in the transverse process, and by the absence of facets on the sides of the body.