The ansa cervicalis, also known as the cervical loop, is a nerve structure located in the neck. Synonyms for this term include the cervical plexus, the cervical nerve loop, or simply the loop of nerves in the neck. The ansa cervicalis is made up of two branches: the superior root and the inferior root. These roots extend from the spinal cord and join together to form the loop. This loop provides motor fibers to muscles in the neck, including the sternohyoid and omohyoid muscles. Understanding the various synonyms for the ansa cervicalis can help in identifying this important nerve structure in medical settings.