Vertebral notch superior: anatomical description and functions
Vertebral notch superior, also known as incisura vertebralis superior, pna, bna; incisura vertebralis cranialis, jna (lat.), is one of the important anatomical structures of the spinal column. It is a depression or notch that forms on the top of the vertebral body.
The anatomical location of the superior vertebral notch may vary slightly depending on the specific vertebra. It is usually located on the top of the vertebra between its arches. The superior vertebral notch is present in each individual vertebra, starting from the cervical spine.
Functionally, the superior vertebral notch has several important tasks. Firstly, it serves as an attachment point for the ligamentous apparatuses that provide stability to the spinal column. These ligaments help prevent excessive movement of the vertebrae and maintain optimal alignment of the spinal column.
In addition, the superior vertebral notch plays an important role in protecting the spinal cord. The spinal canal, formed by the serial connection of vertebrae, contains the spinal cord, which is part of the central nervous system. The superior vertebral notch increases space in the spinal canal, providing additional protection for the spinal cord from injury.
In addition, the superior vertebral notch plays a role in the passage of the vertebral arteries. The vertebral arteries are an important source of blood supply to the brain. They pass through the superior vertebral notch and travel to the brain, providing oxygen and nutrients.
In conclusion, the superior vertebral notch is an anatomical structure of the spinal column that has important functions. It serves as an attachment point for the ligamentous apparatus, provides additional protection for the spinal cord, and is a route for the passage of the vertebral arteries. Understanding the role and significance of the superior vertebral notch helps us better understand the complexity and importance of the spinal column, as well as its protective function for the central nervous system.
The superior vertebral notch (incisura vertebralis superior) is an anatomical formation that is located on the posterior surface of the body of the sphenoid bone. It is a depression in which the canal of the spinal column passes.
The superior vertebral notch is triangular in shape and is a continuation of the anterior sphenoid notch. It is bounded laterally by two sphenoid processes, posteriorly by the body of the sphenoid bone, and anteriorly by the body of the occipital bone.
The vertebral notch is an important anatomical formation because the spinal canal, which contains the spinal cord, passes through it. The superior vertebral notch allows the spinal canal to pass through the sphenoid bone, allowing the spine to move freely.
In addition, the superior vertebral notch plays an important role in the formation of the base of the skull. In particular, it is the boundary between the body and the wing of the sphenoid bone and provides stability to the skull, maintaining its shape and protecting the brain from damage.
Thus, the superior vertebral notch is an important anatomical structure that plays a key role in ensuring the normal function of the spine and base of the skull.