Assertion: eustachian tube | /r/CapableOf | start out level
Facets:
Source sentences:
text: This is in part because the Eustachian tubes start out level, and only develop a downwards slant (towards the nasopharynx) to aid in drainage around the age of four to six years.
text: This is in part because the Eustachian tubes start out level, and only develop a downwards slant (towards the nasopharynx) to aid in drainage around the age of four to six years.