http://en.wikipedia.org/wiki/Human_vertebral_column
The spinal canal follows the different curves of the column; it is large and triangular in those parts of the column which enjoy the greatest freedom of movement, such as the cervical and lumbar regions; and is small and rounded in the thoracic region, where motion is more limited.
The spinal cord terminates in the conus medullaris and cauda equina.
The spinal canal follows the different curves of the column; it is large and triangular in those parts of the column which enjoy the greatest freedom of movement, such as the cervical and lumbar regions; and is small and rounded in the thoracic region, where motion is more limited.
The spinal cord terminates in the conus medullaris and cauda equina.
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