Each pedicle forms one of the lateral sides of the vertebral arch. It consists of four parts, the right and left pedicles and the right and left laminae. The vertebral arch forms the posterior portion of each vertebra. The bodies of adjacent vertebrae are separated and strongly united by an intervertebral disc. Because of this, the vertebral bodies progressively increase in size and thickness going down the vertebral column. The body is the anterior portion of each vertebra and is the part that supports the body weight. A typical vertebra will consist of a body, a vertebral arch, and seven processes. Within the vertebral column’s different regions, vertebrae vary in size and shape, but they all follow a similar structural pattern. If scoliosis is present, an individual will have difficulty bending directly forward, and the right and left sides of the back will not be level with each other in the bent position. Observe the vertebral profile from the side and then from behind to check for kyphosis or lordosis. Excessive vertebral curves can be identified while an individual stands in the anatomical position. Later, as the child begins to stand and then to walk, the lumbar curve of the lower back develops.ĭisorders associated with the curvature of the spine include kyphosis (excessive posterior curvature of the thoracic region), lordosis (excessive anterior curvature of the lumbar region), and scoliosis (an abnormal, lateral curvature, accompanied by twisting of the vertebral column). The neck region’s cervical curve develops as the infant begins to hold their head upright when sitting. Secondary curves are concave posteriorly, opposite in direction to the original fetal curvature. Thus, each of these is called a primary curve because they are retained from the original fetal curvature of the vertebral column.Ī secondary curve develops gradually after birth as the child learns to sit upright, stand, and walk. In the adult, this fetal curvature is retained in two vertebral column regions as the thoracic curve, which involves the thoracic vertebrae, and the sacrococcygeal curve, formed by the sacrum and coccyx. Primary curves are retained from the original fetal curvature, while secondary curvatures develop after birth.ĭuring fetal development, the body is flexed anteriorly into the fetal position, giving the entire vertebral column a single curvature that is concave anteriorly. The four adult curvatures are classified as either primary or secondary curvatures. They then spring back when the weight is removed. When the load on the spine is increased, by carrying a heavy backpack, the curvatures increase in depth (become more curved) to accommodate the extra weight. These curves increase the vertebral column’s strength, flexibility, and ability to absorb shock. The adult vertebral column does not form a straight line but instead has four curvatures along its length. It also protects the spinal cord, which passes down the back through openings in the vertebrae. It is a flexible column that supports the head, neck, and body and allows for their movements. Together, the vertebrae and intervertebral discs form the vertebral column. It consists of a sequence of vertebrae (singular = vertebra), each of which is separated and united by an intervertebral disc. The vertebral column is also known as the spinal column or spine.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |