<prompt> Osteomeatal complex refers toMaxillary ostium, ethmoid infundibulum, hiatus semilunaris and frontal recessFrontal recess, inferior meatus, sphenoid sinusHiatus semiluna ris maxillary ostium, sphenoeth moid recessNone of the given options  <response>: The osteomeatal complex or unit, sometimes less correctly spelled as osteomeatal complex, is a common channel that links the frontal sinus, anterior and middle ethmoid sinuses and the maxillary sinus to the middle meatus that allows air flow and mucociliary drainage. 