Which section of the spinal column consists of the least number of vertebrae?

Which section of the spinal column consists of the least number of vertebrae?

• A. Cervical
• B. Sacrum
• C. Coccyx
• D. Thoracic

Answer: (C)

The coccyx, also known as the tailbone, consists of the least number of vertebrae in the spinal column. Typically, it is made up of three to five fused vertebrae, which is significantly fewer than the other sections of the spinal column. In contrast, the cervical section contains seven vertebrae, the thoracic section contains twelve, and the sacral section consists of five vertebrae that are fused together to form a single sacrum. The unique structure and function of the coccyx, primarily serving as an attachment site for various muscles and ligaments, underscore why it has fewer vertebrae compared to the other regions. This anatomical configuration supports its role in providing stability while sitting and contributes to the overall structure of the pelvis.

The coccyx, also known as the tailbone, consists of the least number of vertebrae in the spinal column. Typically, it is made up of three to five fused vertebrae, which is significantly fewer than the other sections of the spinal column.

In contrast, the cervical section contains seven vertebrae, the thoracic section contains twelve, and the sacral section consists of five vertebrae that are fused together to form a single sacrum. The unique structure and function of the coccyx, primarily serving as an attachment site for various muscles and ligaments, underscore why it has fewer vertebrae compared to the other regions. This anatomical configuration supports its role in providing stability while sitting and contributes to the overall structure of the pelvis.