why is the c1 vertebra called the atlas
Atlas (anatomy) It is named for the Atlas of Greek mythology, because it supports the globe of the head.[1]
Central nervous system The central nervous system consists of the two major structures: the brain and spinal cord. The brain is encased in the skull, and protected by the cranium.[7] The spinal cord is continuous with the brain and lies caudally to the brain,[8] and is protected by the vertebrae.[7] The spinal cord reaches from the base of the skull, continues through[7] or starting below[9] the foramen magnum,[7] and terminates roughly level with the first or second lumbar vertebra,[8][9] occupying the upper sections of the vertebral canal.[4]