great segmental medullary artery

great segmental medullary artery

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 artery (3) , great radicular artery

great seg·men·tal me·dul·la·ry ar·te·ry

(grāt seg-men'tăl med'ŭ-lar'ē ahr'tĕr-ē)

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