The vertebrae of the lumbar spine are numbered L1 through L5; the “L” stands for “lumbar.” They are: L1 : This vertebra begins the lumbar spine after the thoracic spine ends.

The Skeleton: Size Matters; New Role For Master Patterning Genes In Defining Number Of Vertebrae In Spine. ScienceDaily . Retrieved April 2, 2025 from www.sciencedaily.com / releases / 2009 / 10 ...

The vertebrae that make up the cervical spine are the smallest seven within the spinal column. These bones give the neck structure, support the skull, and protect the spinal cord, among other ...