Full 2L QBank
ENT General e0464b07

Which of the following contract together with stapes to stiffen the ossicular chain and protect the inner ear from noise damage?

A
Scala media
B
Tensor tympani
C
Scala vestibuli
D
Semicircular canal
High-Yield Explanation
Stapedius and tensor tympani muscles contract through a neural reflex arc mediated by loud sounds (>80 dB). They act to stiffen the ossicular chain and protect the inner ear from noise damage, paicularly at low frequencies. In contrast, cholesteatoma formation in the middle ear can contact the ossicular chain, increasing the total mass, causing a predominantly high-frequency conductive hearing loss.

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