The complex of nerve tissues that controls the activities of the body. In vertebrates it comprises the brain and spinal cord.
The nervous system which includes the brain, spinal cord, all the incoming and outgoing nerve fibers.
The brain and spinal cord
The spinal cord is a nerve cord inside the spine traveling all the way to the brain, so if you didn't have the nerve cord you're brain couldn't send/receive messages to the body
Spinal Cord
spinal cord and brain
The spinal cord consists of millions of nerve fibers which transmit signals to your limbs, organs and trunk of your body to and from your brain. It's known as central nervous system along with the brain each section controls different parts of your body.
spinal cord
Your Brain has nerve's which send's How fast and slow you use it, Your spinal cord transfers these messages and thats how fast you use it. And your muscles
yes!
Association
a tract is a bundle or group of nerve fibers located within the brain or spinal cord