Assertion: mucus | /r/ObjectUse | used as lubricant
Facets:
value: in the digestive system
type: LOCATION
value: for materials
type: PURPOSE
Source sentences:
text: In the human digestive system, mucus is used as a lubricant for materials that must pass over membranes, e.g., food passing down the esophagus.
text: In the human digestive system, mucus is used as a lubricant for materials that must pass over membranes, such as food passing down the oesophagus.
text: In the digestive system, mucus is used as a lubricant for materials which must pass over membranes, e.g., food passing down the esophagus.
text: In the digestive system, mucus is used as a lubricant for materials which must pass over membranes, e.g., food passing down the esophagus.