Low Back Sprain
Your spine, or backbone, consists of the column of 33 bones and tissue that extends from your skull down to your pelvis. Providing the support of your head and body, your backbone encloses and protects a cylinder of nerve tissues, called the spinal chord. The 33 bones in your spine are called vertebrae (one is called a vertebra).
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Date Last Reviewed:
9/24/2008
Date Last Modified:
9/24/2008