This redirect is within the scope of WikiProject Anatomy, a collaborative effort to improve the coverage of Anatomy on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
If I am not mistaken, the posterior tubercles occur on all the cervical vertebrae. But this article says they are on the posterior ring, which occurs only on the first cervical vertebra. Some revision or clarification is in order, to benefit us laymen. Thanks.