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
Myringotomy is: 
Select and explain. 
A. Surgical opening in Eustachian tube, B. Surgical opening in tympanic membrane, C. Surgical opening in semicircular canal, D. None
B: Surgical opening in tympanic membrane
Answer: B: Surgical opening in tympanic membrane 
Explanation: Myringotomy is a surgical procedure of the eardrum or tympanic membrane.The procedure is performed by making a small incision with a myringotomy knife through the layers of tympanic membrane.This surgical procedure permits direct access to the middle ear space and allows the release of middle-ear fluid, which is the end product of otitis media with effusion (OME), whether acute or chronic.