Assertion: frontal sinus | /r/CapableOf | drain into middle meatus
Facets:
value: through a large ostium
type: MANNER
value: in a variable manner
type: MANNER
value: directly
type: MANNER
Source sentences:
text: The nasofrontal duct is highly variable, and in up to 85% of the population a true duct is absent and the frontal sinus drains into the middle meatus through a large ostium.
text: The nasofrontal duct is highly variable, and in up to 85% of the population a true duct is absent and the frontal sinus drains into the middle meatus through a large ostium.
text: The frontal sinus drains into the middle meatus in a variable manner directly or by a frontonasal duct, which opens into the frontal recess or the ethmoidal infundibulum.