Assertion: eustachian tube | /r/CapableOf | unite upon ventral side of the sphenoid
Facets:
value: behind its articulation with the pterygoids
type: LOCATION
Source sentences:
text: The middle ear communicates with the mouth by the Eustachian tubes, which pass between the basisphenoid and basioccipital bones, and unite upon the ventral side of the sphenoid, a little behind its articulation with the pterygoids, where they open into the mouth cavity by a short membranous duct.