What is the number of cervical vertebrae in the human body?

Humans typically have seven cervical vertebrae, which are the bones located in the neck region of the spine. These vertebrae are labeled C1 through C7. The cervical spine plays a crucial role in providing support for the skull, enabling head movement, and protecting the spinal cord as it runs through the vertebral column.

The first cervical vertebra, known as the atlas, allows the nodding motion of the head, while the second, known as the axis, facilitates the twisting motion. The unique structure of these cervical vertebrae is essential for their function, including the presence of foramina (holes) through which vertebral arteries pass to supply blood to the brain.

Having seven cervical vertebrae is consistent across most mammals, although there can be variations in some species. Understanding the typical number of cervical vertebrae is fundamental for students of anatomy and physiology, as it serves as a basis for understanding spinal structure, function, and related medical conditions.