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
TA98	A15.3.01.053
TA2	6871
FMA	56721
Anatomical terminology [edit on Wikidata]

The name Shrapnell's membrane refers to Henry Jones Shrapnell,^[1] and the name Rivinus' ligament to Augustus Quirinus Rivinus.^[2]