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Related to auditory meatus: External Auditory Meatus
meatus[me-a´tus] (pl. mea´tus) (L.)
an opening or passage, especially one leading to the body surface. adj., adj mea´tal.
acoustic meatus (meatus acus´ticus) either of two passages in the ear; the external acoustic meatus leads from the auricle to the tympanic membrane (eardrum) and the internal acoustic meatus is for passage of nerves and blood vessels.
auditory meatus acoustic meatus.
meatus na´si (meatus of nose) one of the three portions of the nasal cavity on either side of the septum: inferior (meatus nasi inferior), middle (meatus nasi medius), and superior (meatus nasi superior).
ureteral meatus ureteral orifice.
meatus urina´rius (urinary meatus) the opening of the urethra on the body surface, through which urine is discharged.
Etymology: L, audire, to hear, meatus, passage
1 the external auditory meatus, a tubelike channel of the external ear extending from the auricle to the tympanum of the middle ear.
2 the internal auditory meatus, a short channel extending from the petrous part of the temporal bone to the fundus near the vestibule. It contains the eighth cranial nerve. Also called auditory canal.