This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brainstem, cerebellum and ventricles, Subject name: Anatomy
"Nucleus ambiguus" is present at 
Select and explain. 
A. Base of pons, B. Midbrain, at level of superior colliculus, C. Midbrain, at level of inferior colliculus, D. Lateral medulla
D: Lateral medulla
Answer: D: Lateral medulla 
Explanation: The nucleus ambiguus is found in the lateral medulla; it gives rise to the SVE (Special visceral efferent fibers ) components of cranial nerves IX and X. fig:- crossection at the level of medulla(upper pa)