Describe the backbone of a human body.
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Vertebrae: The spine has 33 stacked vertebrae (small bones) that form the spinal canal. The spinal canal is a tunnel that houses the spinal cord and nerves, protecting them from injury. Most vertebrae move to allow for a range of motion. The lowest vertebrae (sacrum and coccyx) are fused together and don't move.
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The backbone of humans start with a series of bones which start from the neck and run till the pelvis. The main function of the backbone is to provide support to the body and to protect the spinal cord. ... Lumbar spine: The lumbar spine makes up the lower back and it comprises of 5 vertebrae named from L1 to L5.
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