Vertebra C7

The cervical vertebra (C7) (7th cervical vertebra) is a unique and atypical vertebra within the cervical spine. It is characterized by several distinct anatomical features:

1. Spinous Process: The spinous process of C7 is notably long and prominent, making it easily palpable at the base of the neck. Unlike the bifid spinous processes of the other cervical vertebrae, the C7 spinous process is typically non-bifid.

2. Transverse Processes: The transverse processes of C7 are larger compared to those of the other cervical vertebrae. They may also have a small foramen transversarium, which is usually smaller than those found in the upper cervical vertebrae and may not always transmit the vertebral artery.

3. Pedicles and Laminae: C7 has relatively broader laminae and larger pedicles compared to the subaxial cervical spine (C3 to C6). The pedicles of C7 are robust, allowing for various surgical fixation techniques such as pedicle screws.

4. Articular Processes: The superior articular facets of C7 face upward and backward, while the inferior articular facets face downward and forward, facilitating articulation with the first thoracic vertebra (T1).

5 Vertebral Body: The vertebral body of C7 is larger than those of the other cervical vertebrae, reflecting its role in supporting the transition from the cervical to the thoracic spine.