The disc normally works like a shock absorber. The disc is a specialized connective tissue structure that separates the two vertebral bodies of the spinal segment. In other cases, the fibers are arranged like a piece of cloth, or knitted materials such as you find in a sweater. In some cases, the collagen fibers join together to form a structure like a rope. Most connective tissue is made of fibers of a material called collagen. Connective tissue is the material that holds the living cells of the body together. Spinal SegmentДЄn intervertebral disc is made of connective tissue. Each spinal segment includes two vertebrae separated by an intervertebral disc, the nerves that leave the spinal cord at that level, and the small facet joints (described later) that link each level of the spinal column. One way to understand the anatomy of the cervical spine to look at a spinal segment. The nerves coming out of the lumbar (lower) spine go to the organs of the pelvis, the legs, and the feet.

The thoracic spine nerves go to the abdomen and chest. The nerve roots that come out of the cervical spine form the nerves that go to the arms and hands. These nerve roots join together to form the nerves that travel throughout the body and form the body's electrical system. Vertebrae Body Bony RingДЄs the spinal cord travels from the brain down through the spine, it sends out nerve branches between each vertebrae called nerve roots. Just as the skull protects the brain, the bones of the spinal column protect the spinal cord. This bony tube surrounds the spinal cord as it passes through the spine. When the vertebrae are stacked on top of each other, the rings form a hollow tube. A bony ring attaches to the back of the vertebral body. Cervical Spine Spine CurvesД®ach vertebra is formed by a round block of bone, called a vertebrae body. The cervical spine curves slightly inward and ends where C7 joins the top of the thoracic spine. The cervical spine starts where the top vertebra (C1) connects to the bottom edge of the skull. Doctors often refer to these vertebrae as C1 to C7. The cervical spine is formed by the first seven vertebrae. The spinal column is the body's main upright support. Vertebrae are stacked on top of one another to form the spinal column. The human spine is made up of 24 spinal bones, called vertebrae. What parts make up the cervical spine, and how do they work?

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