This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Tensor tympani is supplied by: 
Select and explain. 
A. Anterior pa of V nerve, B. Posterior pa of V nerve, C. IX nerve, D. VII nerve.
A: Anterior pa of V nerve
Answer: A: Anterior pa of V nerve 
Explanation: The tensor tympani muscle is derived from 1" arch is hence supplied by the nerve of 1" arch i.e. anterior branch of mandibular nerve.