Skip to content

    Brain & Nervous System Health Center

    Font Size
    A
    A
    A

    Areas the Nerves Control

    h9991288_003.jpg

    The nerves in the area of a vertebra control specific parts of the body. For example, the 7th cervical nerve (C7) in the neck area controls the triceps (the muscle in the upper arm), while the thoracic nerves (T2 through T7) control the chest muscles.

    In a spinal cord injury, complete or partial paralysis occurs in the areas of the body that are controlled by the nerves associated with the damaged vertebrae and those below the damaged vertebrae. The higher the injury on the spinal cord, the more paralysis there is. For example, damage high on the spinal cord, in the cervical segment, can result in paralysis of the chest, arms, and legs (tetraplegia, also known as quadriplegia). Damage lower down on the spine (thoracic, lumbar, or sacral segments) can result in paralysis of the legs and lower body (paraplegia). Breathing is affected only by injuries high on the spinal cord. But bowel and bladder control can be affected no matter where the spinal cord in injured.

    ByHealthwise Staff
    Primary Medical ReviewerAdam Husney, MD - Family Medicine
    Specialist Medical ReviewerNancy Greenwald, MD - Physical Medicine and Rehabilitation

    Current as ofMarch 12, 2014

    WebMD Medical Reference from Healthwise

    Last Updated: March 12, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

    Today on WebMD

    nerve damage
    Learn how this disease affects the nervous system.
    senior woman with lost expression
    Know the early warning signs.
     
    woman in art gallery
    Tips to stay smart, sharp, and focused.
    medical marijuana plant
    What is it used for?
     
    woman embracing dog
    Quiz
    boy hits soccer ball with head
    Slideshow
     
    red and white swirl
    Article
    marijuana plant
    ARTICLE
     
    brain illustration stroke
    Slideshow
    nerve damage
    Slideshow
     
    Alzheimers Overview
    Slideshow
    Graphic of number filled head and dna double helix
    Quiz