Nervous System Physiology Virtually every cell, tissue, organ and system of your body is controlled and regulated by your nervous system. And while the chemical and electrical nature of this vast network is best left to specialists, here are four key things you should know:   When the neurological circuits have integrity, your body works as it was designed.   When spinal vertebrae pinch or choke nerves, affected organs and tissues don’t work the way they should and ill-health results. Efferent Communications Nerve impulses are sent from the brain out to the organs and tissues of your body. Afferent Communications Nerve impulses are sent back to the brain to make sure everything is working correctly. Compressive Lesions If spinal vertebrae pinch or choke nerve tissue, signals going from or to the affected organ or tissue can be diminished. (i.e., constipation.) Facilitative Lesions If spinal vertebrae chafe or irritate nerve tissue, signals going from or to the affected organ or tissue can be excited. (i.e., diarrhea.) The nervous system is vulnerable where delicate nerve tissue comes into proximity with the moving bones of your spine. That’s why we're interested in your spine!