In the cervical spine, Structure C corresponds to which feature?

In the cervical spine, Structure C corresponds to which feature?

• A. Intervertebral foramen
• B. Spinous process
• C. Pedicle
• D. Lamina

Answer: (C)

The labeled structure is the pedicle—the short, stout bridge that connects the vertebral body to the posterior arch. This connection is what places the pedicle at the boundary between the front part of the vertebra and the back part of the arch. The intervertebral foramen, where nerve roots exit, is formed by notches on the pedicles of adjacent vertebrae, so the pedicle itself is the key component that defines this region. The spinous process is the midline posterior projection, and the laminae form the posterior wall of the vertebral canal. Therefore the structure pictured corresponds to the pedicle.

The labeled structure is the pedicle—the short, stout bridge that connects the vertebral body to the posterior arch. This connection is what places the pedicle at the boundary between the front part of the vertebra and the back part of the arch. The intervertebral foramen, where nerve roots exit, is formed by notches on the pedicles of adjacent vertebrae, so the pedicle itself is the key component that defines this region. The spinous process is the midline posterior projection, and the laminae form the posterior wall of the vertebral canal. Therefore the structure pictured corresponds to the pedicle.