Atlas of the Spinal Cord

Abstract We review the organization of the spinal cord by describing the contents of four different major levels of the spinal cord—the sacral, lumbar, thoracic, and cervical—and their functions. We discuss organization within the tracts, crossing of the tracts, the major ascending tracts (spinothalamic, medial lemniscus), and the major descending tract (corticospinal) within the spinal cord.