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Middle Ear - Incus

Left incus. A. From within. B. From the front.

named from resemblance to an anvil
- more like a premolar tooth, with two roots, which differ in length, and are widely separated from each other.
consists of a body and two crura

**Adult Incus Anatomy**
Component	Description
Body (corpus incudis)	somewhat cubical but compressed transversely	anterior surface is a deeply concavo-convex facet	facet articulates with the head of the malleus
Short Crus (crus breve; short process)	somewhat conical in shape	projects almost horizontally backward	attached to the fossa incudis, in the lower and back part of the epitympanic recess
Long Crus (crus longum; long process)	descends nearly vertically behind and parallel to the manubrium of the malleus	bending medialward, ends in a rounded projection, the lenticular process	lenticular process is tipped with cartilage, and articulates with the head of the stapes

(text modified from Gray's Anatomy)

Historic Disclaimer - information about historic embryology pages
Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History \| Historic Embryology Papers)

iBook - Gray's Embryology
	iTunes link \| iBooks Store Description - an extract of the embryology content from Anatomy of the Human Body By Henry Gray Philadelphia: Lea & Febiger, 1918. Releases First Edition - Jan 2012 Second Edition - March 2012 Repaired formatting and image display issues related to Pad rotated display and minor editing issues. Print length 169 pages, 41.6 MB, Language English. The current website also includes numerous images from this textbook, see Anatomy of the Human Body by Henry Gray and Category:Gray's 1918 Anatomy. Note the also Historic Disclaimer.

Gray H. Anatomy of the human body. (1918) Philadelphia: Lea & Febiger.

Cite this page: Hill, M.A. (2024, May 6) Embryology Gray0917.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Gray0917.jpg

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current	02:49, 20 May 2011		600 × 379 (44 KB)	S8600021 (talk \| contribs)	==Middle Ear - Incus== Left incus. A. From within. B. From the front.

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