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external acoustic meatus

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.03 sec.
external acoustic meatus,
the canal of the external ear, composed of bone and cartilage, extending from the auricle to the tympanic membrane. Also called external auditory canal.

meatus
pl. meatus [L.] an opening or passage.

acoustic meatus, meatus acusticus, meatus auditorius, auditory meatus
a passage in the ear; see external acoustic meatus and internal acoustic meatus (below).
ethmoidal meatus
the spaces between the ethmoturbinal bones.
external acoustic meatus
the passageway within the ear between the ear flap and the eardrum.
internal acoustic meatus
the passageway on the medial surface of the petrous temporal bone; transmits the facial and vestibulocochlear nerves.
meatus nasi, meatus of nose
one of the three main airways of the nasal cavity which are found on either side of the septum; they are the dorsal, middle and ventral meati.
nasopharyngeal meatus
the common space shared by the right and left nasal cavities just before they enter the nasopharynx.
meatus urinarius, urinary meatus
the opening of the urethra on the body surface through which urine is discharged.


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Narrowing of the internal and external acoustic meatus (sensorineural loss) and sclerosis of the skull may occur.
This dressing is not appropriate for large wounds or for wounds that are located in the concha auricularis or the external acoustic meatus.
 
 
 
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