Pars flaccida of tympanic membrane
In human anatomy, the Pars flaccida of tympanic membrane or Shrapnell's membrane (also known as Rivinus’ ligament) is the small, triangular, flaccid portion of the tympanic membrane, or eardrum. It lies above the malleolar folds attached directly to the petrous bone at the notch of Rivinus. On the inner surface of the tympanic membrane, the chorda tympani crosses this area.
| Pars flaccida of tympanic membrane | |
|---|---|
 Right tympanic membrane as seen through a speculum. | |
 Right tympanic membrane as seen through a speculum. | |
| Details | |
| Identifiers | |
| Latin | pars flaccida membranae tympanicae |
| TA | A15.3.01.053 |
| FMA | 56721 |
| Anatomical terminology | |
It is named after Henry Jones Shrapnell.[1]
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