Endgames Anatomy Quiz

Anatomy of the atlas and axis

BMJ 2012; 345 doi: https://doi.org/10.1136/bmj.e7399 (Published 07 November 2012) Cite this as: BMJ 2012;345:e7399
  1. Olga Shaw, senior house officer,
  2. Ravi Uppoor, consultant radiologist
  1. 1Cumberland Infirmary, Carlisle CA2 7HY, UK
  1. Correspondence to: O Shaw olga.shaw{at}doctors.org.uk

Identify the structures labelled A-E in this radiograph of the first and second cervical vertebrae (the atlas and axis) in the anterior-posterior projection (open mouth, or odontoid peg view).


  • A: Odontoid process of axis

  • B: Body of axis

  • C: Bifid spinous process of axis

  • D: Left lateral mass of atlas

  • E: Left transverse process of atlas


Cite this as: BMJ 2012;345:e7399

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