You are out hiking and twist your ankle. It hurts, but you make it back to your car without much problem. You notice you have some swelling and it is sore, so you head home for some good, old fashioned R.I.C.E. (rest, ice, compression, elevation). You pass it off, saying, “Oh, it’s just a sprain.” However, when your doctor checks you out the next day, he tells you that it is “strained.” Sprain vs strain, what’s the difference?
The spinal cord and brain make up the central nervous system while the spinal nerves (branching to the spinal cord) and cranial nerves (branching to the brain) make up the peripheral nervous system. There are 31 sets of nerves that extend out of the spinal cord and are connected to it by the nerve root. Each nerve branches out about a half inch from the spinal cord before dividing into smaller branches. The dorsal rami are on the posterior side of the branch while the larger ventral rami are on the anterior side.