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
Middle ear is separated from cerebrum by 
Select and explain. 
A. Tegmen tympani, B. Sphenoid bone, C. Jugular wall, D. Carotid wall
A: Tegmen tympani
Answer: A: Tegmen tympani 
Explanation: The roof of the tympanic cavity is formed by a thin plate of bone, the tegmen tympani, which separates the cranial and tympanic cavities. imageref- sciencedirect.com