Basic Spinal Cord Anatomy To understand this confusion and what you are actually being told when your injury is described as being at a certain level, it is necessary to understand basic spinal anatomy. The spine and the spinal cord are two different structures. The spinal cord is a long series of nerve cells and fibers running from the base of the brain to shortly above the tailbone. It is encased in the bony vertebrae of the spine, which offers it some protection. The spinal cord relays nerve signals from the brain to all parts of the body and from all points of the body back to the brain. Part of the confusion regarding spinal cord injury levels comes from the fact that the spine and the spinal cord each are divided into named segments which do not always correspond to each other. The spine itself is divided into vertebral segments corresponding to each of the vertebrae. The spinal cord is divided into neurological segmental levels, meaning that the focus is on what part of the body the nerves from each section control. The spine is divided into seven neck (cervical) vertebrae, twelve chest (thoracic) vertebra, five back (lumbar) vertebrae, … Continue reading
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