great segmental medullary artery
Definition: largest of the medullary arteries that supply the spinal cord by anastomosing with the anterior (longitudinal) spinal artery; it arises from a lower intercostal or upper lumbar artery (on the left side about 65% of the time) supplying most of the blood to the lower two thirds of the anterior spinal artery.
See: medullary arteries of brain
Synonym(s): arteria radicularis magna, artery of Adamkiewicz, great anastomotic artery3, great radicular artery
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