To check the curvature of the cervical spine, which vertebrae should be examined?

The curvature of the cervical spine is assessed by examining the C1 to C7 vertebrae. The cervical spine consists of seven vertebrae, starting with the first cervical vertebra (C1, also known as the atlas) and ending with the seventh (C7, known as the vertebra prominens). This region is critical as it not only supports the head but also allows for a range of motion and provides protection for the spinal cord.

When observing postural alignment or issues related to the cervical spine, it's important to consider all seven cervical vertebrae, as they work together to maintain the overall function and stability of the neck. This includes assessing for normal lordotic curvature, which is vital for healthy neck mechanics and can influence both upper body posture and overall movement patterns.

In contrast, the other options reference different regions of the spine, such as the thoracic and lumbar areas, which do not directly relate to the assessment of cervical curvature. Thus, focusing on C1 to C7 allows for a thorough analysis of the cervical spine's structure and alignment.