posterior meningeal artery posterior meningeal artery the posterior meningeal artery is the largest vessel supplying the dura region of the posterior fossa. it typically arises from the ascending pharyngeal artery although other origins have been seen, such as the occipital artery. the artery or its branches enter the cranium through jugular foramen, foramen magnum or hypoglossal canal. posterior meningeal arteryposterior meningeal groove labeled at bottom left.detailssourceascending pharyngeal arteryidentifierslatinarteria meningea posteriorta98a12.2.05.011ta24379fma49503anatomical terminology