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 spine in your neck is made of seven vertebrae, called cervical vertebrae. They are numbered from C1 to C7. C1 is at the top of the spine and supports your skull.

By Meg Jones - Milwaukee Journal Sentinel November 18, 2012 12:00 AM ...