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Tympanic membrane secondary

Tympanic membrane secondary (membrana tympani secundaria – definition in system of anatomic terms: PNA (Anatomic nomenclature Parisian), BNA (Anatomic nomenclature Basel), JNA (Anatomic nomenclature Yenskaya); Xing: a membrane of a round window) – the lamina from connecting fabric shutting a window of a snail; extinguishes vibration of the perilympha which is in a drum ladder.

 
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