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Tympanic Membrane
Eardrum; Eardrums; Membrane, Tympanic; Membranes, Tympanic; Tympanic Membranes
An oval semitransparent membrane separating the external EAR CANAL from the tympanic cavity (EAR, MIDDLE). It contains three layers: the skin of the external ear canal; the core of radially and circularly arranged collagen fibers; and the MUCOSA of the middle ear.