Nasolacrimal canal

The rostral orifice of the nasolacrymal duct (canalis nasolacrimalis) is located within the conchal crest (Crista conchalis) -formerly called 'the maxillary crest'- that gives attachment to the ventral concha and runs longitudinally midway up of the nasal surface (Facies nasalis) of the maxilla to separates the ventral and middle meatus, that is continued rostrally by the nasolacrymal groove (Sulcus nasolacrimalis).