stratum radiatum membranae tympani

strat·um ra·di·a·'tum mem·bra·'nae tym·'pa·ni

the connective tissue layer of the tympanic membrane beneath the stratum cutaneum, the fibers of which radiate from the manubrium of the malleus to the peripheral fibrocartilaginous ring of the membrane; absent from the pars flaccida.
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