Assertion: temporal bone's portion | /r/HasProperty | middle mesodermal
Facets:
Source sentences:
text: Ingrowth of mesoderm between the meatal plug and the middle ear forms the central fibrous portion of the tympanic membrane and explains why the mature tympanic membrane has an outer ectodermal (squamous epithelium), middle mesodermal (fibrous) and inner endodermal (respiratory epithelium) layer.