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Figure A labels the neuroforamen of four vertebral motion segments. Groups A-E lists combinations of the nerve roots which exit the corresponding neuroforamen. Assuming normal vertebral anatomy with 7 cervical vertebrae, 12 thoracic vertebrae, and 5 lumbar vertebra, which group is anatomically correct?
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Which artery labeled in Figure A provides the predominant blood supply to the spinal cord?
None of the above