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meatus

 
Dictionary: me·a·tus   (mē-ā'təs) pronunciation

n., pl., -tus·es, or meatus.
A body opening or passage, such as the opening of the ear or the urethral canal.

[Latin meātus, passage, from past participle of meāre, to pass.]


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

  • acoustic m., m. acusticus, m. auditorius, auditory m. — a passage in the ear; see external acoustic meatus and internal acoustic meatus (below).
  • ethmoidal m. — the spaces between the ethmoturbinal bones.
  • external acoustic m. — the passageway within the ear between the ear flap and the eardrum.
  • internal acoustic m. — the passageway on the medial surface of the petrous temporal bone; transmits the facial and vestibulocochlear nerves.
  • m. nasi, m. 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 m. — the common space shared by the right and left nasal cavities just before they enter the nasopharynx.
  • m. urinarius, urinary m. — the opening of the urethra on the body surface through which urine is discharged.
Wikipedia: Meatus
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In anatomy, a meatus is a natural body opening or canal (Latin, 4th declension pl. meatus, or meatuses - often incorrectly meati).

Examples include:

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Meatus" Read more