The transverse processes of the axis are small and directed posterolaterally and inferiorly. They are pierced by the transverse foramen and end in a rounded tubercle. They provide attachment to many muscles. Although this entire projection of bone is called the transverse process, it in actuality is a combination of the true transverse process and a vestigial rib. The true transverse process forms the dorsal portion posterior to the transverse foramen.

Process is a term used in anatomy to describe a projection on a bone. It comes from the Latin pro- meaning forward and cessus for gone. It is an old term that can be traced back to the writings of the early anatomist Celsus.

Processus transversus vertebrae