Meatus
In anatomy, a meatus ( mee-AY-təs; pl.: meatus or meatuses) is a natural body opening or canal. Meatus may refer to: the external acoustic meatus, the opening of the ear canal the internal auditory meatus, a canal in the temporal bone of the skull the urinary meatus, which is the opening of the urethra, situated on the glans penis in males and in the vulval vestibule in females one of three nasal meatuses: the superior meatus, middle meatus and inferior meatus; each are passages through the nasal cavity within the skull.