Kidney Stones, also known as renal calculi, are hard masses that separate urine from the urinary tract. These stones can occur anywhere in the urinary tract, including the kidneys, bladder, ureters and urethra.
This fluid is called the cerebrospinal fluid (CSF). When it leaks out, the pressure around the brain and spinal cord drops. Causes of leakage through the dura include: 1  Certain head, brain, or spinal surgeries.  Head injury.
These nerves travel outside of the spinal canal or spinal cord into the organs, arms, legs, fingersâthroughout the entire body. Injury or mild trauma to the cervical spine can cause a serious or life-threatening medical emergency (eg, spinal cord injury or a spinal fracture).he cervical spine (sometimes abbreviated as c-spine in the medical world) begins at the base of the skull. Seven vertebrae make up the cervical spine with eight pairs of cervical nerves.