This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Pars Flaccida of the tympanic membrane is also called: 
Select and explain. 
A. Reissner's membrane, B. Shrapnell's membrane, C. Basilar membrane, D. Secondary tympanic membrane
B: Shrapnell's membrane
Answer: B: Shrapnell's membrane 
Explanation: (b) Shrapnell's membrane(Ref. Shambaugh, 6th ed., page 380)Reissner's membrane separates Scala media from Scala vestibuli in the inner ear.Basilar membrane separates Scala media or cochlear duct from Scala tympani in the inner ear. The organ of Corti rests on the basilar membrane.Secondary TM overlies the round window in the middle ear.