There are several synonyms for the term "Cortis arch" which is a common anatomical term. One synonym for this term is "Cortis ligament", referring to the same structure. Another alternative could be "Anterior longitudinal ligament", which is another name used to describe the same anatomical feature. Some may also use the term "Ventral vertebral ligament" interchangeably with Cortis arch. While these synonyms may not be as widely recognized as Cortis arch, they are all used to describe the same ligamentous structure present in the vertebral column. It is always useful to be aware of these variations when studying or discussing anatomy to foster a comprehensive understanding of the subject.