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
Nucleus ambiguous includes all, except 
Select and explain. 
A. IX, B. X, C. XI, D. XII
D: XII
Answer: D: XII 
Explanation: Nucleus ambiguous is located posterolateral to medulla at the level of olives.It gives origin to the motor fibres of 9,10,11 cranial nerves(Ref: Vishram Singh textbook of clinical neuroanatomy second edition pg-77)