The vertebral column, also known as the spine, is composed of a series of bones called vertebrae, which are stacked one upon another and interconnected by cartilaginous intervertebral discs to form a column. It forms the skeleton of the neck and back and is divided into five regions based on structure and location of the vertebrae. The alignment of the vertebrae within the vertebral column results in the formation of the four normal curvatures. The vertebral column is largely flexible and capabl