In any body locale where strength of interconnection is a requirement, dense connective tissues are found. Forces transmitted across tissues determine how the protein fibers are placed within each tissue type. For example, tendons and ligaments are cords of the body that must resist linear forces along their lengths.
The cervical spine in your neck is made up of seven bones called vertebrae, which are separated by discs filled with a cushioning gel-like substance. Your cervical discs both stabilize your neck and allow it to turn smoothly from side to side and bend forward to back.
The first seven vertebrae form the cervical spine. The mid back, called the thoracic spine, consists of 12 vertebrae. The lower portion of the spine, called the lumbar spine, is usually made up of five vertebrae. However some people have a sixth lumbar vertebra. The normal spine has an S-like curve when looking at it from the side.