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': 'Sixth cranial nerve lies at? \nSelect and explain. \nA. Midbrain, B. Pons, C. Medulla, D. Cerebellum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sixth cranial nerve which supplies the lateral rectus muscle of the eyeball. one nerve fibre supplies approximately six muscles fibers. Abducent nucleus is situated in the upper pa of the floor of fouh ventricle in the lower pons, beneath the facial colliculus.ventromedially it is closely related to the medial longitudinal bundle. Ref;BDC volume 3;6th edition.', 'role': 'assistant'}]