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Costal process of cervical vertebra ...
This process, forming the ventral portion of the so called transverse process, is the homologue of the ribs. It is vestigial in form and fuses to the vertebra during development.
Costal comes from the Latin word costa meaning rib. 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.