<prompt> Which of the following structure does not pass through Cavernous sinus:Middle Cerebral aeryInternal Carotid aeryAbducens nerveTrochlear nerve  <response>: Middle Cerebral aery Ref: B.D. Chaurasia, 3rd Ed, Vol lllPg 72, 73 Relation of Cavernous sinus: A. Structures outside the sinus: a Superiorly: Optic tract, internal carotid aery, anterior perforated substance b Inferiorly: Foramen lacerum junction of greater wing of sphenoid c Medially: Hypophysis cerebri sphenoid sinus d Laterally: Temporal lobe with uncus e Anteriorly: Superior orbital fissure apex of the orbit f Posteriorly: Apex of petrous temporal bone crus cerebri of midbrain B. Structures in the lateral wall of sinus: a Occulomotor nerve b Trochlear nerve c Ophthalmic nerve d Maxillary nerve e Trigeminal nerve C. Structures passing through the centre of sinus: a Internal carotid aery b Abducens nerve 