Assertion: middle ear's bone | /r/HasProperty | the tympanic annulus
Facets:
Source sentences:
text: The edge of the membrane is thickened and attached to a groove in an incomplete ring of bone, the tympanic annulus, which almost encircles it and holds it in place.
text: The edge of the membrane is thickened and attached to a groove in an incomplete ring of bone, the tympanic annulus, which almost encircles it and holds the membrane in place as seen in the image below.
text: The edges are attached to a ring of bone, the tympanic annulus.