meatus


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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.

me·a·tus

, pl.

me·a·tus

(mē-ā'tŭs), [TA]
A passage or channel, especially the external opening of a canal.
Synonym(s): external opening
[L. a going, a passage, fr. meo, pp. meatus, to go, pass]

meatus

(mē-ā′təs)
n. pl. mea·tuses or meatus
A body opening or passage, such as the opening of the ear or the urethral canal.

me·a′tal (-təl) adj.

meatus

A natural opening of a tubular lumen, which in the usual working medical parlance refers to the urinary meatus located in the glans penis or in the vulva. Other meatuses include the external and internal auditory meatuses, and the superior, middle and inferior meatus of the nose.

me·a·tus

, pl. meatus (mē-ā'tŭs) [TA]
A passage or channel, especially the external opening of a canal.

meatus

Any passage or opening in the body.

meatus

any natural opening or passage, particularly the external auditory meatus leading to the TYMPANUM in the ear.

me·a·tus

, pl. meatus (mē-ā'tŭs) [TA]
Passage, especially external opening of a canal.
References in periodicals archive ?
There is a theoretical possibility of damaging the eustachian tube opening and the nasolacrimal duct in the inferior meatus, but these are avoidable complications.
Shunt was retrieved from bladder and meatus, tract was ligated and excised.
The position of the middle turbinate was classified as either medial (touching the nasal septum), neutral (midway between the septum and lateral wall), or lateral (touching the lateral wall or preventing adequate visualization of the middle meatus).
In majority of the cases in the literature, urethral leiomyomas have been defined as intraluminal masses which stem from the proximal urethra and extending outward from the meatus to the posterior (16).
Forty-six children with foreign bodies in the external acoustic meatus comprised the study group, and 46 with non-ENT disorders comprised the control group.
Prevalence of external acoustic meatus collapse, according to age, in the study population (N=436)
An ideal meatoplasty procedure should provide a widened external meatus that is cosmetically acceptable and exposed to no caloric effect.7 Our patient presented with meatal obstruction caused by previous inadequate surgeries, which is an extremely rare case.
HPV-induced lesions rarely develop in the urethral meatus (UM) and are prone to unsuccessful treatment because of a difficult approach, limitations in safe optional treatment, and fear of complications, especially urethral stenosis.
polyps limited to middle meatus, polyps reaching to inferior meatus and polyps reaching to floor of nasal cavity.
We tested this hypothesis by evaluating the structure of the UM and making measurements of the penile shaft and urethral meatus. The aim of this study was to analyze the penile and the urethral meatus biometry and its correlation with the need for meatoplasty during prostate and bladder endoscopic resections.
Key words: adenocarcinoma, neoplasia, external auditory meatus, bird, avian, African grey parrot, Psittacus erithacus erithacus
The dorsal nasal meatus was a narrow passage between the roof of nasal cavity and dorsal turbinate (Fig.