Definition : 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. [MeSH];
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. [MeSH]