What are typical and atypical vertebrae?
The key difference between typical and atypical vertebrae is that typical vertebrae consist of all basic components of a vertebra while atypical vertebrae are the vertebrae that have modified structure due to their position and function.
Where is the typical vertebra?
A typical vertebra is made up of an anterior vertebral body and a posterior vertebral arch: Vertebral body: The vertebral body is fairly large, especially in a lumbar vertebra (in other words, a vertebra found in the lower back). The vertebral bodies support the weight of your body.
Which vertebrae are typical vertebrae?
Given the twelve thoracic vertebrae are largely similar, most are considered typical thoracic vertebrae with the exceptions T1 and T9 to T12. For a basic anatomic description of the structure of typical vertebrae, see vertebrae.
What are the two main components of a typical vertebra?
A vertebra consists of two parts: an anterior segment, or the vertebral body; and a posterior part, or the vertebral (neural) arch.
What is a typical cervical vertebrae?
C3, C4, C5, and C6 cervical vertebrae. Cervical vertebrae C3 through C6 are known as typical vertebrae because they share the same basic characteristics with most of the vertebrae throughout the rest of the spine. Typical vertebrae have: Vertebral body.
What is a typical thoracic vertebrae?
In human, thoracic vertebrae consists of 12 bones. From top to down, T1, T2, …, T12. A typical thoracic vertebra, seen from lateral side. By convention, the human thoracic vertebrae are numbered T1–T12, with the first one (T1) located closest to the skull and the others going down the spine toward the lumbar region.
What is the function of typical vertebra?
The major function of the vertebral column is protection of the spinal cord; it also provides stiffening for the body and attachment for the pectoral and pelvic girdles and many muscles. In humans an additional function is to transmit body weight in walking and standing.
What are the 7 parts of a typical vertebra?
Terms in this set (8)
- body. located anteriorly; largest part of the vertebra.
- pedicle. attached to and extends posteriorly on either side of the body.
- transverse process. extends laterally from each pedicle.
- lamina.
- spinous process.
- vertebral arch.
- vertebral foramen.
- superior and inferior articular processes.
Which are typical lumbar vertebrae?
L1 to L4 are considered typical lumbar vertebrae, whereas due to various and distinctive differences the fifth lumbar vertebra is considered atypical.
What structures make up the vertebral arch?
The vertebral arch forms the posterior portion of each vertebra. It consists of four parts, the right and left pedicles and the right and left laminae. Each pedicle forms one of the lateral sides of the vertebral arch. The pedicles are anchored to the posterior side of the vertebral body.
What is the difference between typical and atypical ribs?
Based on their structure ribs can be classified as either typical or atypical. The typical ribs have generalized structure making these ribs similar, while the atypical ribs have variations of this structure.
What are the parts of a typical vertebra?
A typical vertebra consists of two essential parts—viz., an anterior segment, the body, and a posterior part, the vertebral or neural arch; these enclose a foramen, the vertebral foramen.
What is the structure of a typical vertebrae?
Structure of a Vertebrae. All vertebrae share a basic common structure. They each consist of an anterior vertebral body , and a posterior vertebral arch . Vertebral Body. The vertebral body forms the anterior part of each vertebrae.
What are some examples of vertebra?
The human vertebral column is one of the most-studied examples. In a human’s vertebral column, there are normally thirty-three vertebrae; the upper twenty-four are articulating and separated from each other by intervertebral discs, and the lower nine are fused in adults, five in the sacrum and four in the coccyx, or tailbone .
What is the difference between a vertebra and a vertebrae?
Vertebra is a single bone while vertebrae are the collection of all those vertebral bones together.