Final answer:
The cervical portion of the spine, or vertebral column, consists of seven vertebrae, numbered C1 to C7.
Step-by-step explanation:
The cervical portion of the vertebral column, also referred to as the spine or backbone, contains seven vertebrae. These vertebrae are numbered from C1 to C7 and provide support and protection for the spinal cord as it extends from the base of the skull. In particular, the C1 vertebra articulates with the occipital condyles of the skull at the top, while C1 and C2 articulate with each other below. The cervical vertebrae are uniquely designed with a small body and bifid (Y-shaped) spinous processes for flexibility and protection of the nervous pathways.