What is the relationship of the cord segment and its spinal nerves to the vertebral body?
The spinal cord extends from the medullary cervical junction at the foramen magnum to the level of the body of the first or second lumbar vertebra.
The spinal roots exit in relation to their corresponding vertebral body.
The first seven cervical nerves exit above the vertebral body, and the eighth exits below C7. The remainder of the spinal roots exit below their corresponding vertebral body.