Incredible coloured scanning electron micrograph (SEM) of section through a human spinal nerve
The nerve is composed of numerous bundles of myelinated axons. In the centre is a blood vessel filled with red blood cells. The human body contains 31 paired spinal nerves. The spinal nerves connect the brain/spinal cord with the muscles of our body. â¢Today medicogram is going to present you the physiological basis of how this intuitive system of nerves works within our physique! When you want to move your leg, Signals from your leg passes through the posterior root ganglion (Sensory) of the spinal nerve to the spinal cord, reaches the higher centres of the brain, Processed there and comes back through the descending tracts of the spinal cord, forwarded to the anterior root ganglion (Motor) of the same spinal nerve (which innervates the muscles of your leg) and induces the desired movements in your leg.
