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
Tegmen seperates middle ear from the middle cranial fossa containing temporal lobe of brain by - 
Select and explain. 
A. Medical wall of middle ear, B. Lateral wall of middle ear, C. Roof of middle ear, D. Anterior wall of middle ear
C: Roof of middle ear
Answer: C: Roof of middle ear 
Explanation: The roof of middle ear is formed by a thin plate of bone called tegmen tympani. It separates tympanic cavity from middle cranial fossa.
Tegmen tympani is formed by squamous and petrous part of temporal bone.Q