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Lumbar vertebrae L1-L4

The lumbar vertebrae from L1 to L4 are located between the thoracic and sacral spines and are characterised by a triangular-shaped central foramen (vertebral foramen) for the passage of the spinal cord and meninges, two transverse processes, and a long and narrow spinous process. Their role is to provide motility and stability to the spine, and provide an attachment for muscles and ligaments. 
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