The Spinal Cord, Nerves And How They Work
Whether asleep or awake, a pet's brain is constantly receiving messages from nerve receptors in the skin, muscles, joints and internal organs. Information travels from these nerve receptors to the brain via peripheral nerves and the spinal cord. Any interruption to this constant flow of information not only prevents the brain from getting information. It also prevents messages from the brain getting back to muscles, skin or viscera. Damage to the spinal cord can cause depression, loss of voluntary muscle movement, changes in spinal reflexes, changes in muscle tone, muscle shrinkage and loss of touch and pain sensations.