- aka the ear drum
- consists of a thin core of fibrous connective tissue, with epidermis on the external surface and mucous membrane on the inner surface
- circular, about 1 cm in diameter and obliquely placed
- appears concave from the lateral surface and, at the bottom of the concavity, is a depression, the umbo (= rounded or conical elevation), where the handle of the malleus attaches to it
- The tympanic membrane is very sensitive to pain, especially the external surface, which is supplied by the auricular branches of the auriculo-temporal branch of the mandibular nerve and the facial nerve (minor).
- note: In young children, the external auditory meatus is very short, which means that the tympanic membrane is close to the surface. Care must therefore be taken when inserting an auroscope.