This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
[{'content': 'Position of nucleus ambiguous is \nSelect and explain. \nA. Anteromedial to olive, B. Anterolateral to olive, C. Posteromedial to olive, D. Posterolateral to olive', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Nucleus ambiguous lies at the level of olives in medulla, posterolateral to olives.It lies deep within the reticular formation and gives origin to the motor fibres of 9,10 and 11 cranial nerves. Along the posterolateral sulcus emerges the rootlets of 9,10and11 cranial nerves.(Ref: Vishram Singh textbook of clinical neuroanatomy second edition pg 73, fig 8.2)', 'role': 'assistant'}]