The artery of Adamkiewicz most commonly originates at the T9-T12 region.
a) The artery of Adamkiewicz originates in the cervical spine b) The artery of Adamkiewicz originates at the T4 level c) The artery of Adamkiewicz has a constant origin d) The artery of Adamkiewicz most commonly originates at the T9-T12 region