Assertion: frontal sinus | /r/CapableOf | lie at upward angle
Facets:
Source sentences:
text: While the maxillary, ethmoid, and sphenoid sinuses can be approached with straight instrumentation and 0° endoscopes, the frontal sinus drainage pathway lies at an upward angle to the anteroposterior axis of the ethmoid sinuses.
text: While the maxillary, ethmoid, and sphenoid sinuses can be approached with straight instrumentation and 0° endoscopes, the frontal sinus drainage pathway lies at an upward angle to the anteroposterior axis of the ethmoid sinuses.