单词 | paranasal sinus |
例句 | Located inside this portion of the ethmoid bone are several small, air-filled spaces that are part of the paranasal sinus system of the skull. Anatomy and Physiology 2013-06-19T00:00:00Z Each paranasal sinus is named for its associated bone: frontal sinus, maxillary sinus, sphenoidal sinus, and ethmoidal sinus. Anatomy and Physiology 2013-06-19T00:00:00Z |
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