NATIONAL CANCER INSTITUTE Spine Anatomy &Functions Side View of Spine Indicating: Vertebrae lntervertebral Disc Spinal Cord Cerebrospinal Fluid Cauda Equina Sections of Spine Indicating: Cervical Region (Cl-C7): Controls arm. hand and breathing functions Thoracic Region (TI-112): Controls chest and abdominal functions Lumbar Region (Ll-LS): Controls leg, knee, and foot functions Sacral Region (51-55): Controls leg, buttocks. foot. bowel. bladder and sexual functions Coccyx Axial View of Spine Indicating: Vertebral Body Spinal Nerve Cerebrospinal Fluid Spinal Cord Spinous Process cancer.gov