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The vertebral column is made up of 26 bones that provide axial support to the trunk. The vertebral column provides protection to the spinal cord, which runs through its central cavity. Between each vertebra is an intervertebral disk, which acts as a shock absorber.

Review Date 5/9/2016

Updated by: Luc Jasmin, MD, PhD, FRCS (C), FACS, Department of Surgery at Providence Medical Center, Medford OR; Department of Surgery at Ashland Community Hospital, Ashland OR; Department of Maxillofacial Surgery at UCSF, San Francisco, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.