lateral medullary branches of (intracranial part of) vertebral artery

lat·er·al med·ul·lar·y branch·es of (in·tra·cra·ni·al part of) ver·te·bral ar·te·ry

(lat'ĕr-ăl med'ŭ-lar'ē branch'ĕz in'tră-krā'nē-ăl pahrt vĕr'tĕ-brăl ahr'tĕr-ē) Minute branches of the vertebral artery (or its larger branches) that course laterally along the ventral aspect of the medulla oblongata.