What Are Spinal Nerves?
One of the most influential nerves for sending signals in your brain is the spinal cord. Well, because it’s protected by the spine, it’s called the spinal cord. Actually, what is the spinal cord and why does it affect your brain so much?
Why is the spinal cord different from other body systems?
brain and nervous system disorders
The spinal cord is a part of the central nervous system that has a vital role for movement and the core of your mind. Starting from walking, talking, to breathing. Therefore, if this nerve is injured, it has a significant impact on your body.
Similar to the brain, the spinal cord is also covered by three layers of meninges. Well, the spinal cord and meninges are channeled through the center of the spine and consist of 26 individual spines (vertebrae).
These vertebrae are separated by discs made of cartilage. This cartilage or young bone acts as a pillow to reduce the strength produced when you jump or walk.
How the spinal cord protects from injury
spinal cord injury
Well, because this nerve is very important for your body, of course, it has a protective layer that is quite strong compared to other systems.
First of all, the injury will not directly damage this nerve because there are a skull and spine that protect it. Both functions to block a hard impact so that no injury occurs. The liquid under the bone also acts as a shock absorber.
Even so, this defense device turned out to also backfire for the network. That is because when a collision succeeds in injuring the spinal cord, the soft tissue of the brain and nerves will swell. This can put pressure because there is no more space.
The swelling can actually make the injury worse and infection in the bone. Therefore, if you have a spinal cord injury, please go directly to the nearest hospital.
How does the spinal cord work with the body’s muscles?
This central nerve type is indeed connected by all tissues in the body, including muscle tissue. That is because your mind is giving commands to move to your central nervous system (CNS). From the SSP, it is then channeled through the somatic part of the nerve which is in charge of controlling movement.
When the message arrives, acetylcholine is released from the nerve endings and stimulates the muscle fiber membrane so that contractions occur. Even though it looks fast, it turns out this process takes about 1 millisecond.