Assertion: nasopharynx's wall | /r/HasAspect | opening
Facets:
Source sentences:
text: Mastoid wall: This posterior wall has an opening called the aditus to the mastoid antrum that connects the tympanic cavity (epitympanic recess) to the mastoid air cells (sinus).
text: The anterior wall has two choanae or openings which connect the nasopharynx with the nasal cavity.