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Physiology of hearing and hearing loss

Question
15 out of 39
 

Impedance matching occurs d/t- (LQ)



A Difference of surface are of tympanic membrane and foot plate

B Semicircular canal fluid

C Utricle and Saccule

D None

Ans. A difference of surface area of tympanic membrane and foot plate

The area oftympanic membrane is much larger than area of stapes footplate, the average ratio being 21 :1. As the effect ice vibratory

area of tympanic membrane is only two thirds, the effectives areal ratio is reducted to 14:1 which helps in impedance matching/ transformer action.

Physiology of hearing and hearing loss Flashcard List

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