anterior arch

The cervical vertebrae, comprising the uppermost segment of the vertebral column, include seven vertebrae (C1–C7) with unique features like a bifid spinous process and transverse foramina, supporting neck mobility and nerve passage. The atlas (C1) and axis (C2) have specialized structures, such as the dens and anterior arch, enabling head rotation and support. This article provides an in-depth exploration of the cervical vertebrae’s anatomy, physical characteristics, and functional roles, offering a comprehensive guide to their significance in spinal health.

The atlas (C1) vertebra represents a unique anatomical structure, distinctly different from all other vertebrae in the spinal column. As the first cervical vertebra, it supports the skull and enables precise head movements through its specialized architecture. This ring-shaped vertebra lacks a body and spinous process, instead featuring distinctive lateral masses and arches that facilitate its crucial role in head mobility and stability.