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[Latin incūs, incūd-, anvil, from incūsus, past participle of incūdere, to forge with a hammer : in-, intensive pref.; see in-2 + cūdere, to beat, forge.]
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Saunders Veterinary Dictionary:
incus |
The middle of the three ossicles of the ear; called also anvil.
Random House Word Menu:
categories related to 'incus' |
Wikipedia on Answers.com:
Incus |
| Bone: Incus | |
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| Left incus. A. From within. B. From the front. | |
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| Auditory tube, laid open by a cut in its long axis. | |
| Bones and muscles in the tympanic cavity in the middle ear | |
| Gray's | subject #231 1044 |
| Precursor | 1st branchial arch[1] |
| MeSH | Incus |
The incus or anvil is the anvil-shaped small bone or ossicle in the middle ear. Incus means "anvil" in Latin. It connects the malleus to the stapes. It was first described by Alessandro Achillini of Bologna.
The incus transmits sound vibrations from the malleus to the stapes. The incus only exists in mammals, and is derived from a reptilian upper jaw bone, the quadrate bone. Embryologically it is derived from the first pharyngeal arch along with the rest of the bones of mastication, such as the maxilla and mandible.
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Contents
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Head and neck of a human embryo eighteen weeks old, with Meckel’s cartilage and hyoid bar exposed.
External and middle ear, opened from the front. Right side.
Chain of ossicles and their ligaments, seen from the front in a vertical, transverse section of the tympanum.
Ossicles
The Anatomy Wiz Incus
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| incudostapedial |
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Copyrights:
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 | American Heritage 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 |
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| American Heritage Stedman's Medical Dictionary. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Read more |
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| Saunders 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 |
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| Random House Word Menu. © 2010 Write Brothers Inc. Word Menu is a registered trademark of the Estate of Stephen Glazier. Write Brothers Inc. All rights reserved. Read more |
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| Wikipedia on Answers.com. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article Incus. Read more |
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