Question

Bifurcated spinous process is present in

• A. All cervical vertebrae
• B. Second and Sixth cervical vertebrae
• C. All thoracic vertebrae
• D. First and seventh cervical vertebrae

Answer 1

The correct option is B Second and Sixth cervical vertebrae

• The spinous process extends posteriorly, or rearward, from the laminae of the vertebra, and is a point of attachment for several muscles, ligaments, and fasciae.
  
• In cervical vertebrae C2 through C6, there exists a common variation of bifurcation. A spinous process is considered bifurcated when a small 'split' occurs at the distal end.
• ​The bifurcation allows for the nuchal ligament to fall centrally which allows the cervical musculature to attach jointly to this strong ligament, as well as the spinous process without interference at the bony insertion.
  
• Hence the Bifurcated spinous process is present in second and Sixth cervical vertebrae.
• So, the correct answer is 'Second and Sixth cervical vertebrae'.