Tympanic membrane

Tympanic Membrane consists of three layers, the outermost squamous, middle fibrous (thick), and the innermost mucosal lining continuous with the lining of the middle ear.

It has a tense portion (pars tensa 70%) and a flaccid portion (pars flaccida 30%) with a projection in the middle known as umbo (where the handle of the malleus is attached).

When viewed with an otoscope it looks circular, pale pink, and semi transparent.

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