How many cervical vertebrae are there in the human spine?

There are seven cervical vertebrae in the human spine, which is a fundamental aspect of human anatomy. These vertebrae are labeled C1 through C7 and play a crucial role in supporting the skull, protecting the spinal cord, and allowing for a range of head and neck movements.

The first cervical vertebra, known as the atlas, supports the globe of the head and allows for the nodding motion. The second vertebra, called the axis, enables rotation of the head. These vertebrae are distinct from the thoracic and lumbar vertebrae, which differ in quantity and function.

Understanding the number of cervical vertebrae is essential for various fields, including medicine, physical therapy, and sports science, as it lays the groundwork for understanding spinal health and injuries.