The spine is an important part of the human body that needs to be both strong and flexible. Check out this informative human spine anatomy video which gives an overview of what exactly it is as well as its role in a functioning human body. The column of bones that make up the spine also protect the spinal cord, a bundle of nerves and cells that connect to the brain, forming the central nervous system. Individual bones in the spine are known as vertebrae, these vertebrae are connected together by facet joints at the back of the spine. There are five sections of vertebrae which include the cervical, thoracic, lumber, sacral and coccygeal (tailbone). Watch the video to learn more.