Ascending pharyngeal artery anastomoses and foramina

Middle pharyngeal arteryDescending palatine artery (IMA)
Accessory meningeal artery (IMA)
Superior pharyngeal arteryForamen lacerumInferolateral trunk to ICA
Clival branches to meningohypophyseal trunk to ICA
Pterygovaginal canalPterygovaginal artery to accessory meningeal artery (IMA)
Foramen lacerumRecurrent artery of the foramen lacerum to ICA
Inferior tympanic arteryPetrosquamosal branch of middle meningeal artery
Caroticotympanic artery to ICA
Stylomastoid artery
Hypoglossal branchHypoglossal canalVertebral artery
Jugular branchJugular foramenLateral clival artery to ICA
Musculospinal branchForamen magnumVertebral artery
Odontoid arch systemForamen magnumOccipital artery
  • Note.—IMA signifies internal maxillary artery; ICA, internal carotid artery.