Cervical spinal cord is divided into two sections: the upper cervical rachis sub-occipital which contains the first cervical vertebra atlas, and the second cervical vertebra axis, as well as the lower cervical rachis which extends from the lower side of the axis up to the upper surface of the first dorsal vertebra.
La columna vertebral cervical se divide en dos partes: El raquis cervical superior o suboccipital que contiene la primera vértebra cervical o atlas y la segunda vértebra cervical o axis, y el raquis cervical inferior que se extiende desde la cara inferior del axis hasta la cara superior de la primera vértebra dorsal.