petrosal branch of middle meningeal artery petrosal branch of middle meningeal artery the petrosal branch of middle meningeal artery enters the hiatus for greater petrosal nerve, supplies the facial nerve and anastomoses with the stylomastoid branch of the posterior auricular artery. petrosal branch of middle meningeal arterythe course and connections of the facial nerve in the temporal bone.the otic ganglion and its branches.detailssourcemiddle meningeal arteryidentifierslatinramus petrosus arteriae meningeae mediaeta98a12.2.05.066ta24436fma49719anatomical terminology