<prompt> Cranial nerve related to apex of the petrous temporal bone -a VIIIb VIIc VId Ve IXcdbcbdac  <response>: SiteCranial Nerves Sphenoid fissure superior orbital III, IV, first division V, VI Lateral wall of cavernous sinus III, IV, first division V, VI, often with proptosis Retrosphenoid space II, III, IV, V, VI Apex of petrous bone V, VI Internal auditory meatus VII, VIII Ponto cerebellar angle V, VII, VIII and sometimes IX Jugular foramen IX, X, XI Posterior laterocondylar space IX, X, XI, XII Posterior retroparotid space IX, X, XI, XII and homer syndrome 