Spinal Cord

"a brain, spinal cord, and bladder", by National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health. Drawing of a brain, spinal cord, and bladder. Labels point to the brain, spinal cord, bladder, urethra, and sphincter muscles. An additional label explains that the brain and spinal cord make up the central nervous...

Your spinal cord is a bundle of nerves that diminishes the middle of your back. The cord is continual with the medulla oblongata at the foramen magnum. Like the brain, the spinal cord is surrounded by bone, meninges, and cerebrospinal liquid. The spinal cord is split into 31 segments, with each segment generating a pair of spinal nerves. At the distal end of the cord, many spinal nerves expand past the conus medullaris to form a collection that resembles a horse's tail. This is the cauda equina. In cross area, the spinal cord appears oval in form.

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