Assertion: oropharynx's base | /r/CapableOf | merge with loose mucosa
Facets:
value: on the floor of the mouth
type: LOCATION
Source sentences:
text: The surface of the tongue is referred to as the dorsum that extends from the tip to the epiglottis, while the posterior portion is known as the base which merges with the loose mucosa on the floor of the mouth.