Assertion: middle ear | /r/HasProperty | the mesotympanum
Facets:
Source sentences:
text: The middle ear can be divided into three parts (Fig. 3-1): the mesotympanum or the tympanic cavity proper that lies opposite the tympanic membrane; the epitympanum (or the attic) that lies cranial to the tympanic membrane; and the hypotympanum that forms a variable inferior extension of the middle ear cavity below the level of the tympanic membrane.