Which term refers to the central support structure of the vertebrae?

• A. Spinal Column
• B. Cervical Spine
• C. Head Injury Red Flags
• D. PERRL

Answer: (A)

The central support structure of the vertebrae is the spinal column. This term refers to the bony axis formed by the vertebrae stacked from the skull down to the pelvis, providing the main structural support for the head and trunk and protecting the spinal cord within the spinal canal. It includes all regions—cervical, thoracic, lumbar, sacral, and coccygeal—so it’s the whole column rather than just a part. The cervical spine is only the neck portion of that column, not the entire structure. The other options don’t describe a skeletal axis: head injury red flags are warning signs for brain injury, and PERRL is a mnemonic about pupil response, not anatomy.