What it does
The brain and spinal cord form the central nervous system. The spinal cord is universally described as a bundle of nerves. When the brain sends a signal for a body part to do something, that's known as a motor signal. When the body sends a signal to the brain, that's a sensory signal that might indicate touch, pressure or temperature. We also have autonomic functions that include functions like digestion, body temperature and heart rate. All motor, and autonomic function messages travel from the brain to the spinal cord to nerves. Sensory signals travel through nerves, to the spinal cord to the brain. Spinal nerves also make up part of this network. There are 31 pairs of spinal nerves that branch off of the spinal cord on each of its sides. In turn, smaller systems of nerves branch off of those spinal nerves through every inch of the body.What's a spinal cord injury
A spinal cord injury (SCI) involves damage to the spinal cord itself or the roots of the spinal nerves within the spinal canal. The higher the location of an SCI, the more profound dysfunction a victim will experience. That location is called the level of the injury. It's the lowest area of the body where the SCI victim still has normal movement or feeling after suffering the injury.Incomplete vs. complete spinal cord injuries
With an incomplete spinal cord injury, the victim might have some feeling and muscle movement below the level of the injury. The victim of a complete spinal cord injury is generally paralyzed below the level of injury. He or she has no sensory perception in the affected area either.Common causes of spinal cord injuries
To suffer a debilitating SCI, the cord need not be completely severed. Irreparable harm could result from bone fragments piercing it. A displaced vertebra can even result in an SCI. Nearly all of these injuries are permanent. Unlike other parts of the body, the spinal cord doesn't heal itself, and the most modern medical science can't heal it either. Once an SCI occurs, further damage to the spinal cord can occur over days or weeks through bleeding, swelling and the accumulation of fluid around the cord. According to the Mayo Clinic, the most common causes of spinal cord injuries are:- Automobile and motorcycle accidents
- Falls, especially with people over 65
- Sports and recreational injuries
- Acts of violence primarily consisting of gunshot wounds
- Past and future medical bills
- Past and future lost earnings
- Permanent disfigurement
- Permanent disability
- Pain and suffering
- Loss of a normal life