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The hiatus semilunaris is a crescent-shaped slit in the lateral wall of the nasal cavity. It contains openings for the frontal sinus, maxillary sinus, and ethmoidal air cells.
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The hiatus semilunaris is a crescent-shaped slit in the lateral wall of the nasal cavity. It contains openings for the frontal sinus, maxillary sinus, and ethmoidal air cells.