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The vertebral arch, also known as the neural arch or spinal arch, is a critical structure in the anatomy of the vertebral column. It is a bony structure that surrounds and protects the spinal cord, as well as provides attachment points for muscles and ligaments that support the spine.
A typical vertebra has a body (a.k.a. vertebral body), which consists of a large anterior core portion called the centrum (or vertebral centrum, plural centra) and a ring-like posterior portion called the vertebral arch [2] (which encloses the spinal cord, hence also called neural arch). [3]
neural arch. noun. : an arch of bone or cartilage of a vertebra that is situated posterior to a vertebral body, is formed by the fusion of two pedicles and two laminae, and along with the back portion of the vertebral body forms a vertebral foramen through which the spinal cord passes.
Neural arch – The bony arch of the back part of a vertebra that surrounds the spinal cord; also referred to as the vertebral arch, it consists of the spinous process and lamina. Pedicle – The bony part of each side of the neural arch of a vertebra that connects the lamina (back part) with the vertebral body (front part).
A vertebra consists of two parts: an anterior segment, or the vertebral body; and a posterior part, or the vertebral (neural) arch.
The vertebral arch (or neural arch) is the posterior part of a vertebra. It consists of a pair of pedicles and a pair of laminae, and supports seven processes: four articular processes. two transverse processes. one spinous process.
…centrum, surmounted by a Y-shaped neural arch. The arch extends a spinous process (projection) downward and backward that may be felt as a series of bumps down the back, and two transverse processes, one to either side, which provide attachment for muscles and ligaments.
The axis, or second cervical vertebra, forms from four ossification centers: two neural arches, the body, and the odontoid process. The dens, or odontoid process, projects superiorly from the body of the axis and serves as a pivot for the atlas .
These notches of adjoining vertebrae along with the intervertebral discs form intervertebral foramina which serve as passageways for spinal nerves. A typical vertebral arch gives rise to seven processes: one spinous process, two transverse processes and four articular processes.
a curved structure made of bone or cartilage on the back part of a vertebra (= one of the small bones in the spine) that forms a passage for the spinal cord (= set of nerves in the spine) to pass through: They complete the neural arch by fusing together, and enclose the vertebral canal, which serves for the protection of the spinal cord.