Which region of the spine consists of 7 vertebrae?

The region of the spine that consists of 7 vertebrae is the cervical spine. This area is located at the top of the spinal column and is crucial for supporting the head and facilitating a wide range of head and neck movements. The cervical vertebrae are labeled C1 to C7, with each vertebra crafted to allow for flexibility and motion while also providing protection to the spinal cord that runs through this region. Each vertebra in the cervical spine has specific features that allow for the rotation and tilting of the head, distinguishing it from the thoracic, lumbar, and sacral regions of the spine.

The thoracic spine consists of 12 vertebrae and supports the rib cage. The lumbar spine typically has 5 larger vertebrae designed for weight-bearing, and the sacral spine is composed of 5 fused vertebrae that form the back of the pelvis. Each of these regions has unique characteristics and functions that differentiate them from the cervical spine.