01/13/2024
Body & Brain: “This awesome plastination by Gunther van Hagens can help you visualize how the brain and spinal cord innervate your body by sending spinal nerves to the left and right :)
The spinal cord is the main pathway for information connecting the brain and peripheral nervous system. It is protected by the bony spinal column.
The spinal cord is located in the vertebral foramen and is made up of 31 segments: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral and 1 coccygeal. A pair of spinal nerves leaves each segment of the spinal cord.
The length of the spinal cord is about 45 cm in men and 43 cm in women. The spinal cord is shorter than the length of the bony spinal column; the spinal cord extends down only to the last of the thoracic vertebrae.
Nerves that extend from the spinal cord from the lumbar and sacral levels must run in the vertebral ca**l for a distance before they leave the vertebral column. This collection of nerves in the vertebral ca**l is called the cauda equina (which means "horse tail").
There doctors can do liquor punctions because they cant hurt the spinal cord with the needle, because there are only loose nerve fibres that can dodge the needle (like stinging a needle into a horse tail).”
- Text by University of Washington
- Photo Credit: Gunther van Hagens
Dr Gunther von Hagens’ BODY Worlds Exhibition
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