It is formed by skeletal structures skull and cervical vertebrae connected by articulations atlanto-occipital, atlanto-axial and vertebral muscle attachments, ligaments, aponeurosis, innervations and blood supply.
Consta de estructuras esqueléticas cráneo y vértebras cervicales relacionadas por articulaciones atlantooccipital, atlantoaxoidea y vertebrales, uniones musculares, ligamentos, aponeurosis, inervación y riego sanguíneo.