The spine, or the backbone, is the bony connection between the skull and the pelvic bone. It not only helps us stand upright, but it also acts like a superhighway connecting the brain to the rest of our body. It can be divided into upper (cervical), middle (thoracic), lower (lumbar) spine, sacrum and coccyx (tailbone). 

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The spinal cord, connecting the brain to rest of the body, passes through this superhighway like a cable. When it reaches the lower spine, it fans out like spaghetti to form the cauda equina (Latin: Equina- Horse, Cauda-Tail “Horse’s Tail”)