Which of the following structures is inferior to spheno petrosal Synchondrosis -: (A) Abducens nerve, (B) Osseous part of auditory tube, (C) Cartilaginous part of auditory tube, (D) Petro squamous sinus
Answer is C. o Lateral part of inferior surface of petrous part of temporal articulates with greater wing of sphenoid (spheno-petrosal synchondrosis) to form sulcus tubae for the ludgement of cartilaginous part of auditory tube.