This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
[{'content': 'Which of the following is a direct content of the cavernous sinus? \nSelect and explain. \nA. Ophthalmic division of trigeminal nerve, B. Trochlear nerve, C. Abducent nerve, D. Occulomotor nerve', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Structures passing through the medial aspect of the sinus: 1. Internal carotid aery with the venous and sympathetic plexus around it. 2. Abducent nerve: inferolateral to the internal carotid aery The structures in the infra lateral wall and on the Lasseter medial aspect of the sinus are separated from blood, by the way, endothelial lining. Ref.BDC volume 3;sixth edition pg 193', 'role': 'assistant'}]