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vertebral arch


Definition: the posterior projection from the body of a vertebra that encloses the vertebral foramen; it consists of paired pedicles and laminae; the spinous, transverse, and articular processes arise from the arch. In the aggregate, the vertebral arches—and the ligamenta flava that unite them—form the posterior wall of the vertebral (spinal) canal. usage note the term is NOT synonymous with the neural arch, a developmental formation that becomes the vertebral arch plus the posterolateral portion of the vertebral body.

Synonym(s): arcus vertebraeTA

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.