Posterior arch of atlas

Bone: Posterior arch
First cervical vertebra, or atlas. (Poster. arch labeled at bottom center.)
Rectus capitis posterior minor
Latin arcus posterior atlantis
Gray's subject #21 99

In a cervical vertebra, the posterior arch forms about two-fifths of the circumference of the ring: it ends behind in the posterior tubercle, which is the rudiment of a spinous process and gives origin to the Recti capitis posteriores minores.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.